Question

The area of an isoceles triangle is 240 cm sq. If the base of the triangle is 20 cm then the length of equal sides is

Answer 1

Answer:

A=bhb

2

hb=a2﹣b2

4

Solving fora

a=1

2b2+16(A

b)2=1

2·202+16·(240

20)2=26cm