Question

isosceles triangle has perimeter 30 cm and each equal side is 12 cm. find area?​

Answer 1

Answer:

72 cm is the area of isosceles triangle.

Step-by-step explanation:

Given:

isosceles triangles all equal side is 12 cm.

To find:

the area of isosceles triangle.

Formula:

1/2 × length × breath

Solution:

area of triangle =1/2×12×12

area of triangle =72cm.

Therefore, 72 cm is the area of isosceles triangle.

Answer 2

Step-by-step explanation:

P = 30

a +2b = 30cm

a+ 2*12cm = 30cm

a= 30cm - 24cm

a= 6cm

Now Using the. formula

$\frac{b \sqrt{4 {a}^{2} - {b}^{2} } }{4}$