Students and Teachers Forum
Solution, height of pyramid(h)= 18m Area of base = 81 m2 Now, Volume of square based pyramid = 1/3 area of base * h .....
Solution, length of base (a) = 12 cm height (h) = 15 cm Now Volume of pyramid = 1/3 area of base * height = 1/3 * 122 * .....
Solution : Area of triangular base A = 16.4 cm2 Length of prism h = 25 cm Volume of the prism V = ? We know, V = A * h = 16.4 * 25 = 410 .....
Solution : Perimeter of triangular base P = 24 cm Area of cross section B = 24 cm2 Height h = 10 cm Then, Total surface area TSA = P * h + B = 24 * 10 + 24 = 240 +24 = 264 .....
Solution : Area of triangular base A = 32.5 cm2 Lateral Surface area LSA = 300 cm2 Then, Total surface area TSA = A + LSA = 32.5 + 300 = 332.5 .....
Solution : Perimeter P = 14.5 cm LSA = 290 cm2 length l = ? We know, LSA = P . l or, 290 = 14.5 * l or, l = 20 cm So, the length of the prism is 20 .....
Solution : Perimeter P = 18 cm Length h = 15 cm Lateral surface area LSA = ? We know, LSA = P . h = 18 * 15 = 270 .....
Here, LSA = Perimeter of base ⨯ height. height of prism is .....
Healthy habits to keep our body clean are as follows: (i) take bath daily. (ii) wash your hand time to time which soap or hand wash. (iii) always clean and hygienic food. (iv) cut your nails regularly so that no dirt can enter to your mouth by .....
Solution : TSA = 1848 cm2 or, 3πr2 = 1848 or, r2 = 196 or, r = 14 cm Then, CSA = 2πr2 = 2 * 22/7 * 14*14 = 1232 cm2 and, volume v = 2/3 * π * r3 = 2/3 * 22/7 * 14 *14 *14 = 5750 .....
Solution : Circumference of great circle C = 2πr or, 132 = 2 πr or, r = 21 cm and, CSA = 2 πr 2 = 2 *π * r* r = TSA = 3 .....
Solution : circumferecne C = 44 cm or, 2πr = 44 or, r = 7 cm and, (r+h) = 27 or, 7 + h = 27 or, h = 20 cm Then , Volume v = πr2h = 22/7 * 7 * 7 * 20 = 3080 .....
Solution : Let height = radius = x Total surface area TSA = 2464 cm2 Volume V = ? We know, TSA = 2πr(r+h) or, 2464 = 2πx.2x or, 2464 = 4πx2 or, x2 = 196 or, x = 14 cm Then, Volume V = π r2 h = 22/7 * 14*14*14 = 8624 .....
Solution : CSA = 1320 cm2 Circumference C = 66 cm or, 2πr = 66 or, r = 10.5 cm height h = ? TSA = ? Volume v = ?' We know, CSA = 2πrh or, 1320 = 2π * 10.5 * h or, h = 20 cm TSA = 2πr(r+h) = 2π * 10.5 ( 10.5 + 20 ) = .....
Solution : CSA = 1320 cm2 height h = 15 cm TSA = ? Volume v = ?' We know, CSA = 2πrh or, 1320 = 2π * r * 15 or, r = 14 cm TSA = 2πr(r+h) = 2π * 14 ( 14 + 15) = 2π * 14 * 29 = 2552 cm2 Volume V = πr2 h = .....
Solution : TSA = 528 cm2 CSA = 220 cm2 TSA = Plane surface area + CSA =
Let, a be the amount, r be the rate and t be the time. Then, Principal P = a / ( 1 + .....
Once upon a time, there was a little girl abandoned by her stepmother as her father died when she was a very small child. She was hungry and thirsty but she could not find any lake or pond nearby so she walked and walked but by this time she had .....
9082 - 4157 .....
From the ancient age, it was believed that the earth lies at the centre of the solar system, and the sun and other members of this system revolve around the earth. But, the Polish astronomer Nicolaus Copernicus proposed a theory claiming .....
ALBERT EINSTEIN Albert Einstein was born in Germany in 1879, to a Jewish family. His father was an engineer and a salesman. Einstein wasn’t a very bright student. He even had problems with his speech. When he was five years old, Einstein .....
Since the high percent of the total population of the Nepalese earn their livelihood from their field, we may say that agriculture is the main occupation of the people of .....
सुदूरपश्चिम प्रदेशमा बन क्षेत्र अन्य प्रदेश भन्दा बढी छ । यस प्रदेशको कुल ५६.९६% भुभाग बन .....
For solving all the problems of Pressure, at first you should know these relations: liquid pressure P = hdg where h= depth of liquid d= density of liquid g= acceleration due to gravity According to pascal's law " liquid exerts .....
A community is a group of people having similar kinds of needs and interests. They work together to fulfill their needs and offer each other help whenever .....
The dyne is the centimeter-gram-second (CGS) unit of force. One dyne is the force required to cause mass of one gram to accelerate at a rate of one centimer per second squared in the absence of other force-producing .....
Solution : volume v = 19404 cm3 radius r = ? We know, v = 2/3 * π * r3 = 2/3 * 22/7 * r3 or, r3 = 19404 * 3*7) / 2 * 22 = 9261 or, r3 = 213 or, r = 21cm So, its radius is 21 .....
Solution : TSA = 616 cm2 radius r = ? We know, TSA = 4πr2 or, 616 = 4πr2 or, 616/4π = r2 or, r2 = 49 or, r = 7 cm Its radius is 7 .....
Solution : Volume v = 9π/2 cm3 diameter d = ? We know, v = 4πr3 / 3 or, 9π/2 = 4πr3 / 3 or, r3 = 27/8 or, r3 = (3/2)3 or, r = 1.5 Its radius is 1.5 cm , diameter is 2 * 1.5 = 3 .....
Gravity determines how the burning flame goes upwards and throwing balll fall dowanwards . All the hot gases in the flame are much hotter and having less density than the surrounding air, so they move upward. and .....
Solution : Circumference C = 44 cm TSA = ? We know, C = 2πr or, 44 = 2πr or, r = 7 cm Then, TSA = 3πr2 = 3 * 22/7 * 7 * 7 = 462 .....
Your figure is missing. Please post .....
Solution : radius r = 21 cm surface area a = ? volume v = ? We know, a = 4πr2 = 4 * 22/7 * 21 * 21 =5541.77 cm2 v = 4/3 * π * r3 = 4/3 * 22/7 * 21 * 21 * 21 = 38792.39 .....
Solution : volume v = 936 cm3 height h = 6 m base area b = ? We know, b = πr2 and, v = πr2h or, 936 = b * 6 or, b = 936/6 = 156 cm2 So, its base area is 156 .....
Ohm is the standard unit of electrical resistance in the SI, formally defined to be the electrical resistance between two points of a conductor when a .....
Water conservation has become essential in all regions, even where water seems abundant. That’s because our water resources are finite, and they are getting smaller every year.
water conservation helps .....
COVID-19 is defined as illness caused by a novel coronavirus now called severe acute respiratory syndrome .....
Solution : let height be a and radius = a, then, We know, CSA = 2πrh =2x22/7 x a x a= 44a2 / 7 cm2 or, 308= 44a2 / 7 or, a2 = 49 or, a = 7 Its height is 7 .....
Solution: diameter d = 42 cm radius r = d/2 = 42/2 = 21 cm curved surface area CSA = 11880 cm2 or, 2 π r h = 11880 or, 2 * 22/7 * 21 * h = 11880 or, h = 90 cm Thus, the height of a cylinder is 90 .....
Solution : Volume V = 539 cm3 circumference C = 22 cm Height h = ? We know, C = 22 cm or, 2πrh = 22 or, rh = 3.5 and, V = 539 cm3 or, πr2h = 539 or, πr x rh = 539 or, πr = 539/ 3.5 or, r = .....
Solution : Volume V = 1320 m3 base area A = 264 m2 height h = ? We know, V = πr2h or, 1320 = A x h or, 1320 = 264 x h or, h = 5 m Its height is .....
Solution : Volume V = 4620 cm3 height h = 30 cm radius r = ? we know, V = π r2 h or, 4620 = 22/7 * r2 * 30 or, r2 = 49 or, r2 = 72 or, r = 7 cm Thus, Its radius is 7 .....
Solution : Height h = 14cm curved surface area CSA = 616 cm2 Radius r = ? We know, CSA = 2 π r h or, 616 = 2 π r x 14 or, r = 7 Its radius is 7 .....
It is a musical instrument used in Mithila community. It is a wooden instrument having six .....
Solution : Height h = 20 cm Circumference C = 88 cm Total surface area TSA = ? We know, C = 2 π r or, 88 = 2 π r or, r = 14 cm TSA = 2πr (r+h) = 88 x (14+20) = 88 x 34 = 2992 .....
Solution : diametere d = 8 cm radius r = 4 cm length h = 140 cm curved surface area CSA = ? Total surface area TSA = ? Volume V = ? We know, CSA = 2πrh =2x22/7 x 4 x 140 = 3520 cm2 TSA = 2πr ( r + h) = 2 x 22/7 x 4 x ( 4 + 140) = .....