Question

The circumference of the ball is 88m . Find the cost of painting the spherical ball if 100 sqcm paint cost â‚ą0.06

Answer 1

$2\pi r$ = 88m

$\pi r$ = 44m

$r = 7/22*44$

r = 14m

tsa of the ball = $4\pi r^{2}$

                       = 4*(22/7)*14*14

                       = 2464 sq. meters

converting $m^{2} to cm^{2}$,

         2464 sq. meters = $2464 * 10^{9}$ sqcm

multiplying rate into TSA,

          (6/100)*10^9*2464

= 147840000000 of some currency

converting meters to centimeters