Question

base of issoscale triangle is 80 cm and area is 360cm square ,Find its perimeter​

Answer 1

Step-by-step explanation:

area= base*height/2

360 =80*h/2

720=80h

h=9

height=9 cm

base=80cm

perimeter=2h+b

=18+80

=98cm

Hope it helps

#/AJ#/

Answer 2

Answer:162

Step-by-step explanation:

Let us assume the equal sides to be x.

Given that base=80 cm.

 

=> Height of the isosceles triangle= (using pythagoras theorem)

So, area=1/2 bh

360= 1/2*80*<span>root x^2-40^2

9=root x^2-40^2

81=x^2-40^2

x^{2}=1681

x=41cm

=> Perimeter=41+41+80=162cm.