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受欢迎的 Word Problems >

Find the area of a circle with a 半径 of 9.9 millimeters. Round your answer to the nearest hundredth. (Use value of pi=3.14)

解答

F in d t h e a re a o f a c i rc l e w i t h a r a d i u s o f 9.9 mi ll im e t ers . R o u n d yo u r an s w er t o t h e n e a res t h u n d re d t h . (U se v a l u e o f π = 3.14)

解答

a re a : 307.91 m m^{2}

求解步骤

Given:

r a d i u s : 9.9 mm

给定

r = 9.9

的圆面积:

A = 307.90749 \dots

a re a : 307.91 m m^{2}

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