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The diameter of a round dinner plate is 10 inches. What's the area of the plate? A. 39.25 inches B. 78.5 square inches C. 39.25 square inches D. 314 square inches
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5 votes
The diameter of a round dinner plate is 10 inches. What's the area of the plate?

A. 39.25 inches
B. 78.5 square inches
C. 39.25 square inches
D. 314 square inches

User Adam Casey
by
8.4k points

2 Answers

6 votes
The radius is half the diameter. r = 10/2 = 5 inches.
A = (3.14)(5^2)
A = (3.14)(25)
A = 78.5 square inches.hope that helps
User Kaze
by
7.7k points
4 votes
B 78.5 square inches
User David Wu
by
8.4k points
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