Question

if V=4/3π r³,find 1)the value of V when r=5 2)the value of r when V=113 1/7 (take π 22/7)​

Answer 1

Answer:

if V=4/3π r³,

1)the value of V when r=5

$v = \frac{4}{3} \times \frac{22}{7} \times {5}^{3} = 523.81 \:$

2)the value of r when V=113 1/7

$v = 113 \frac{1}{7} = \frac{792}{7} \\ \frac{792}{7} = \frac{4}{3} \times \frac{22}{7} \times {r}^{3} \\ {r}^{3} = \frac{792 \times 3}{88} = 27 \\ r = 3$