Question

The base of an isosceles triangle is 24cm and its area is 192 sq.cm. Find its perimeter.​

Answer 1

Answer:

Perimeter=64cm

Step-by-step explanation:

I used concept of similarity of triangles to show that

BD=CD

if you know very good if dont, then no problem i will show you short explanation

When we say that two triangles are similar then we meant that the ratio of sides of triangles are equal, and it is represented as ~ sign

I used here AAA which meant that if two angles of two triangles are equal then we can say that they are similar as shown

THANKYOU

Answer 2

Step-by-step explanation:

Given, base of an isosceles triangle =24 cm

Area of isosceles triangle =192 sq.cm

Area =

2

1

×b×h

∴192=

2

24.h

∴h=16 cm

Side=

h

2

+12

2

=

256+144

=20 cm

Perimeter of triangle =2a+b

=2(20)+24=64 cm