Question

a ball is 20 cm in diameter. what will be its surface area and volume​

Answer 1

ANSWER:-↙️↙️⭐⭐

Ball is in the shape of sphere

So, Surface area of sphere=4*pie*r^2

=4*22/7*10*10

=22/7*25=1257.25cm^2

Volume of sphere=4/3*pie*r^2

=4/3*22/7*10*10

=419.04cm^3

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Answer 2

$\mathfrak{\huge{Answer:}}$

Given that :

Diameter of a ball ( which will be considered as a sphere ) is = 20 cm

The Radius of the same ball will be = 10 cm

Now, the Surface Area of the sphere = $\sf{4 \pi r^{2}}$

Bring in the value of r into the formula and then solve it :-

=》 $\sf{4 \times 3.14 \times 10 \times 10}$

=》 $\sf{1256\:cm^{2}}$

Now, the Volume of the sphere = $\sf{\frac{4}{3} \pi r^{3}}$

Bring in the value of r into the formula and then solve it :-

=》 $\sf{\frac{4}{3} \times 3.14 \times 10 \times 10 \times 10}$

=》 $\sf{4186.7\:cm^{3}\:(approx)}$

Thus, the values will be as stated above.