Question

Consider the enlargement of the pentagon.

Not drawn to scale

What is the value of x, rounded to the nearest tenth?
2.1 centimeters
3.3 centimeters
7.0 centimeters
15.0 centimeters

Answer 1

B

Explanation:

Answer 2

"Enlargement" here implies that the two pentagons are similar. Because of similarity, the following equation of ratios must be true: 7/15 = x/7. Then 15x=49, and x = 49/15 = 3.27 cm, approximately.

Rounded to the nearest tenth, that comes to 3.3 cm.