Education10000000001 Education10000000001

09-05-2018
Mathematics

contestada

Two corresponding side of similar pentagons are 12 cm and 28 cm.

what is the ratio of the areas of the pentagons?

A. 12/28

B. 27/343

C. 9/49

Respuesta :

CastleRook CastleRook

18-05-2018

The ratio of the areas of the polygon will be evaluated as follows:
area scale factor=(linear scale factor)²
linear scale factor=(length of pentagon A)/(length of polygon B)=12/28=3/7
thus:
area ratio=(3/7)²=9/49

Answer: C. 9/49

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