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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

Respuesta :

B 78.5 square inches
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 

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