Given that length is three times of breadth  i.e  l = 3b and P = 104 cm i.e 104 = 2 ( l + b ) or, 104 = 2 ( 3b + b ) so b = 13 cm and l = 13 x 3 = 39 cm now, area = l x .....

Given that  P = 220 cm b = 45 cm we know P = 2 ( l + b ) i.e , 220 = 2 ( l + 45 ) after calculating , you will get  l = 65 cm now use A = l x .....

Given that P = 90 cm l = 30 cm we know that P = 2 ( l + b ) i.e  90 = 2 ( 30 + b ) after calculating, you will get b = 15 cm. Now, use  A = l x .....

From figure, ∠DNB + ∠CNB = 180°     [ sum of linear pair]  72° + ∠CNB = 180° ∠CNB = 180° - 72° ∠CNB = 108°  2a = x  ( being alternate .....

Given, ∠ABC = 4a ∠BAC = a ∠ACB = x  ∠ACD = 130° Now, ∠ACB + ∠ACD = 180° or, x + 130° = 180° ( angles in a straight line ) or, x = 180° - 130° ∴ x = 50° .....

Given that, side of square is x cm and area of square is 576 sq. cm we know that Area =  l2 i.e  576 = x2 therefore , x = 24 .....

Human resource is human power which is important for the development of a nation. It is one of the three important resources for the all-round development of a nation. The other two resources are economic and natural resource. Human resource is .....

(243)2n/5 ⨉ 32n+1 ÷ 9n+1 ⨉ 32(n-2) = (35)2n/5 ⨉ 32n+1 ÷ (32)n+1 ⨉ 32(n-2)     ( (ax)y = ax.y = axy) = 35(​​​​2n/5) ⨉ 32n+1 ÷ 32(n+1) ⨉ 32(n-2)  .....

Light energy is the only form of energy that can be seen with naked eyes. As other forms of energy light energy can also be transferred from one form to other.  For example:  - Every organism is dependent on light for their energy and .....

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First Case: When the body is at a distance R from the centre of the earth, we have the formula for acceleration due to gravity as: g = GMR²; where, G = universal gravitational constant. ( same all over the universe) M = mass of the .....

Anjo is .....

Troposphere is responsible for the change in weather.  The troposphere is the first layer above the surface. Weather occurs in this .....

Here, The marked price of the camera (M.P) = Rs.24000 Let the discount rate = y % Then according to the question: VAT rate = 2 x Discount rate = 2y % Now,  SP with discount = 24000 - y% of 24000 = 24000 - y / 100 x 24000  = 24000 - 240 .....

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Here,  f(3x + 4) = 5x + 8 Then, put x = (x - 4) / 3  on both sides, f(x)  = 5 ⨉ (x - 4) / 3 + 8 or, f(x) = (5x + 4)/3 Now, y =  (5x + 4)/3 Interchange the value of x  and y. And continue you will get the .....

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Steps: 1. Draw base line AB = 7.1 cm. 2. Using compass draw an angle 90∘ at points A and B. 3. Mark point D and C from A ard B respectively such that AD = BC = 6.1 cm. 4. Join DC. 5. Extend line AB to x and using compass mark point F .....

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Here to find the perimeter , we need to find height of  pyramid.. Slant height=l=13cm let a be the length of base. We know, TSA= a2+2al or, 360=a2+26a or, a2 + 26a - 360 = 0 Now factorise it and find a. Then we .....

Here,  2[9×3] = 2[27] = .....

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