Question

$\huge\pink{a \: spherical \: tennis \: ball \: is \: of \: diameter \: 7.0 cm. \: find \: (a) \: its \: volume, \: and \: (b) \: its \: surface \: area.}$
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Answer 1

Answer:

volume of a sphere=

$\frac{4}{3} \pi \: r ^{3}$

diameter /2 = radius = 7/2

placing radius in the formula

4/3×22/7×(7/2)^3= 179.6 cm^3

surface area of sphere =

$4\pi\:r ^{2}$

placing radius in the formula

4×22/7×(7/2)^2= 154 cm^2

thus volume of sphere is 179.6 cm^3

and surface area of sphere is 154 cm^2

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Answer 2

Explanation:

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