A spherical ball is divided into two equal halves. If the curved surface area of each half is 56.57cm2,find the volume of the spherical ball.
Answers
Answered by
114
Solution;-
Curved surface area of the spherical ball = 2πr²
⇒ 2*3.14*r² = 56.57
⇒ r² = 56.57/(2*3.14)
⇒ r² = 9 (Approx)
⇒ r = cm
Volume of the spherical ball = 4/3πr³
= 4/3*3.14*3*3*3
= 113.04 cu cm
Answer.
Curved surface area of the spherical ball = 2πr²
⇒ 2*3.14*r² = 56.57
⇒ r² = 56.57/(2*3.14)
⇒ r² = 9 (Approx)
⇒ r = cm
Volume of the spherical ball = 4/3πr³
= 4/3*3.14*3*3*3
= 113.04 cu cm
Answer.
Answered by
31
Answer:
The surface area of a sphere is
4πr2
So half a sphere is 2πr2
If the surface area of half a sphere is 56.57 cm2, we can solve for the radius, r.
56.57 = 2(3.14)r2
r2 = 9
r = 3
Now the volume of a sphere is v = 4/3 πr3
v = 4/3 (3.14)(33) = 113,04 cm3
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