Question

Find the radius of the ball if it has a surface area of 60 square inches

Answer 1

Step-by-step explanation:

ball is a sphere

surface area of ball A=60sqare inches

• >4.pi.r suare =60
• pi. r suare =15

22/7. r square =15

r square=15*7/22

r Square =105/22

r = underroot 105 /22

Answer 2

Given : Surface area of ball =  60 sq inches   or 60π sq inches

To find : Radius of Ball

Solution:

Let say radius of Ball = r

Ball is  spherical Shape

Surface area of Ball = 4πr²

Case 1 :

Surface area of Ball  = 60 sq inches

=> 4πr² = 60

=> πr² = 15

using  π = 3.14

=> 3.14 r² = 15

=>  r² = 4.777

=> r = 2.186  inch

none of the given option matches

Case 2 :

Surface area of Ball  = 60π sq inches

=> 4πr² = 60π

=> r² = 15

=> r = √15  inch

Last option is correct

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