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if the diameter of spherical ball is 14 cm how much leather sheet required to prepare 20 such balls.
Answers
Answer:
6930 cm sq
Step-by-step explanation:
Diameter of the spherical ball = 21 cm
So, radius = 21/2 = 10.5 cm
Surface area of the sphere = 4πr²
= 4 × 22/7 × 10.5 × 10.5
Surface area of one spherical ball = 1386 sq cm
So, the required leather to make one spherical ball is 1386 sq cm.
Therefore, to make 5 such spherical balls, leather will be required
= 5 × 1386
= 6930 sq cm
Hope it helps
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Answer:
12320cm^2 area of leather sheet
Step-by-step explanation:
For a spherical ball,
diameter= 14cm
radius= 7cm
surface area of ball = 4πr^2
= 4 × 22/7 × 7 × 7
= 88 × 7 = 616 cm2
SA of 20 such balls= 616 × 20 = 12320 cm2
Therefore, leather sheet required for 20 such balls is 12320 cm2
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