Question

What is the surface area of a sphere with a 4 ft diameter (round to 1 decimal)?

A) 12.6 ft2
B) 16.7ft2
C) 50.2 ft2
D) 100 ft2​

Answer 1

• Radius=Diameter/2
• Radius=r=4/2=2ft

TSA:-

• 4πr²
• 4π(2)²
• 3.14(4)(4)
• 16(3.14)
• 59.24ft²