Question

The base of an isosceles triangle is 12cm and its perimeter is 32cm. Find its area.​

Answer 1

Answer:

length of base=12 cm

let the length of two equal sides be x cm

perimeter=32cm

b. t. p

x+x+12=32

2x=32-12

2x=20

x=10

altitude=√[(10) ^2+(6(^2]

√[100+36]

=√136=11.6

area=1/2 X 11.6 X 12

11.6X 6

69.6

abs 69.6sq.cm