Question

Find the area of a triangle ABC in which AB=AC ,base BC =5m and perimeter is 14m

Answer 1

Answer:

11.25

Step-by-step explanation:

as ab=ac the triangle is equilateral triangle

and perimeter= sum of all sides

14=ab+bc+ac

14=2ab+bc

14=2ab+5

14-5=2ab

9=2ab

ab= 9/2

ab=4.5

area of triangle= 1/2*base(bc)*hieght(ab)

1/2*5*4.5

on solving you get 11.25