Question

Two equilateral triangle has their sides in ration 3:5 what will be the ratio of their area and perimeter respectively.

• A. 9:25 and 3:5
• B. 3:5 and 9:16
• C. 9:25 and 3:4
• D. 9:25 and 2:5

Answer 1

The correct option is A

9:25 and 3:5

Area of an equilateral triangle = $x=\sqrt{3}/4\ast a^2$

The ratio of their area will be square of the ratio of their sides.

Perimeter of equilateral triangle = 3a.

The ratio of perimeter = ratio of sides.