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Popular Word Problems >

The area of a circle is 4.3 cm2. Find the circumference of the circle, rounding your answer to 3 significant figures.

Solution

T h e a re a o f a c i rc l e i s 4.3 c m 2. F in d t h e c i rc u m f ere n ce o f t h e c i rc l e, ro u n d in g yo u r an s w er t o 3 s i g ni f i c an t f i gu res .

Solution

c i rc u m f ere n ce : 7.35 c m

Solution steps

Given:

a re a : 4.3 c m^{2}

Radius given

A re a = 4.3 : r = 1.16992 \dots

Circle circumference given

r = 1.16992 \dots : C = 7.35087 \dots

c i rc u m f ere n ce : 7.35 c m

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