Answer:
A≈422.37
You use the equation A=πr(r+h2+r2) to find the surface area of a cone
The answer would be -15.74
C = 2 pi r
but c = 15
15 = 2 pi r
15 = 2 * (22/7) * r
r = (15*7) / 2 / 22
r = 2.386
Answer:
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Step-by-step explanation:
To cover at least 170.5 sq.ft. the width must be at least 11 feet
W=170.5sq.ft / 15.5 ft = 11ft