Question

Find area and perimeter

A. 12x;7x+3

B. 24x; 10x+8

C. 12x; 5x+14

D. 24x;5x+14

Answer 1

Area of a triangle = 1/2 x base x height:

Area = 1/2 x 8 x 3x = 12x

Perimeter = sum of the 3 sides:

4x-3 + x +9 + 8 = 5x +14

Answer: C. 12x; 5x+14