Question

A sphere has a surface area of 301.84 cm^2. Find it's diameter. With steps

Answer 1

Surface area of sphere= 301.84 cm^2,

4 × 22/7 ×r^2 =301.84 ,

r^2 = 301.84 ×7 / 22,

r^2 = 24.01

r = 4.9cm

diameter = 2r =2×4.9 =9.8cm

Answer 2

Answer:

Given:-A sphere has a surface area of 301.84 cm^2.

To Find it's diameter

Solution

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➔Area o circle = 301.84cm² ( Given)

➔using formula Area of circle = πr²

➔301.84 = 22 ×r²

7

➔ r² = 301.84×7

22

➔r² = 96.04

.°. r =9.8

➔Circumference of circle = 2πr

.°. Circumference of circle = 2× 22 ×9.8

7

=> 61.6 cm.

Hence, the required diameter is 61.6 cm.

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This is your answer ok.

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