Asked by William M
#1: A ball has a radius of 1 foot. What is the surface area of the ball?
A. 2 pi ft^2
B. 4 pi ft^2
C. 6 pi ft^2
D. 8 pi ft^2
#2: What is the approximate surface area of the sphere if the sphere has a measurement of 27 cm?
A. 247,000 cm^2
B. 9,160 cm^2
C. 36,600 cm^2
D. 339 cm^2
A. 2 pi ft^2
B. 4 pi ft^2
C. 6 pi ft^2
D. 8 pi ft^2
#2: What is the approximate surface area of the sphere if the sphere has a measurement of 27 cm?
A. 247,000 cm^2
B. 9,160 cm^2
C. 36,600 cm^2
D. 339 cm^2
Answers
Answered by
Marqués Hinton
#1 i think is c.
#2 i think is b.
#2 i think is b.
Answered by
Steve
#1: A = 4πr^2 = 4π*1^2 = 4π
#2: correct, if the radius is 27cm.
#2: correct, if the radius is 27cm.
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