Question

the total cost of making a spherical ball is Rs 33957 at the rate of Rs 7 per m square what will be the radius of the ball

Answer 1

AREA OF 1 m^2 × TOTAL AREA = TOTAL COST.

TOTAL AREA = TOTAL COST/1 m^2.

Answer 2

Given - Total cost and rate per metre square

Find - Radius of ball

Solution - The radius of the spherical ball is 19.6 metres.

Rupees 7 is the Cost of making the 1-metre square spherical ball

So, Rupees 33957 is the cost of making - 33957/7

Area of spherical ball = 4851 m².

The area of the spherical ball is equivalent to 4πr², where r is the radius of the ball.

So, 4851 = 4*22/7*radius²

radius² = (4851*7)/(22*4)

radius² = 33957/88

radius² = 385.9

radius = 19.6 metre

Hence, the radius of the spherical ball is 19.6 metres.