Question

The dimensions of triangle A are three times the dimensions of triangle B. The area of triangle B is 28 cm What is the area of triangle A? ​

Answer 1

Below in bold.

Explanation:

The ratio of theire areas is 1^2 : 3^2

= 1:9.

So the area of triangle A = 28 * 9

= 252 cm^2.

Answer 2

`252cm {}^(2)`

step by step explanation:

`since \: \: dimension \: of \: traiangle \: a \: = 3 times \: dimension \: of \: triangle \: b \\ note \: that \: area \: is \: square \: of \: dimension \: \\ therefore \: area \: of \: triangle \: a \: = 3 {}^(2) \: area \: of \: triale \: \: b \\ area \: of \: trianle \: a = 9 * 28 = 252cm {}^(2)`