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受欢迎的 Word Problems >

Find the area and the 周长 of a circle with radius 4 mm. Write your answers in terms of pi, and be sure to include the correct units in your answers.

解答

F in d t h e a re a an d t h e c i rc u m f ere n ce o f a c i rc l e w i t h r a d i u s 4 mm . W r i t e yo u r an s w ers in t er m s o f π, an d b e s u re t o in c l u d e t h e correc t u ni t s in yo u r an s w ers .

解答

a re a : 16 π m m^{2}

c i rc u m f ere n ce : 8 π mm

+1

十进制

50.26548 \dots, 25.13274 \dots

求解步骤

给定

r = 4

的圆面积:

A = 16 π

给定

r = 4

的圆周长:

C = 8 π

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