Question

The perimeter of an isosceles triangle is 42cm .The ratio of the equal side to its base is 3 ratio 4 . Find the area of the triangle​

Answer 1

Answer:

the perimeter of isosceles triangle 32cm p of isosceles triangle = 2 * equal side + base let length of equal side be 3x and base be 2x

2 * 3x + 2x = 32 cm

6x + 2x = 32cm

8x = 32 cm

x= 4 cm

length of equal side = 3*4= 12cm length of base = 2*4=8cm

area of isosceles triangle-b*1/4*V4a2-b2

= 8*1/4 V4*144-64

=21512

=2*22.62

= 45.25cm2