How many balls each of radius 2cm can be made from solid sphere of lead of radius 8 cm
Answers
Answered by
129
Radius of solid sphere = 8 cm
Volume = 4/3πr^3 = 4/3 x π x 8 x 8 x 8 cm^3
Radius of the ball = 2 cm
Volume of 1 ball = 4/3πr^3
= 4/3 x π x 2 x 2 x 2
Let the number of balls be X
X x 4/3 x π x 8 = 4/3 x π x 512
X x 8 = 512
X = 512/8
X = 64
Hence, number of required balls is 64
Hope this helps...
Volume = 4/3πr^3 = 4/3 x π x 8 x 8 x 8 cm^3
Radius of the ball = 2 cm
Volume of 1 ball = 4/3πr^3
= 4/3 x π x 2 x 2 x 2
Let the number of balls be X
X x 4/3 x π x 8 = 4/3 x π x 512
X x 8 = 512
X = 512/8
X = 64
Hence, number of required balls is 64
Hope this helps...
Answered by
12
Answer:
No.of balls = Volume of share / Volume of each ball = 4 / 3π × 8 × 8 × 8 / 4 / 3π × 2 × 2 × 2 = 64
hope it helps..... u
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