Question

the perimeter of an isosceles triangle X cm long equal side and 3 cm the third side is 15 cm find the length of equal sides

Answer 1

Answer:

Area of isosceles triangle = 12/4 root under(4 x 152 - 122) = 12/4 root under (√900 - 144)

= 3√756 = 3 x 6√21 = 18√21 cm2

Answer 2

Answer:

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Step-by-step explanation:

Given:

The perimeter of the isosceles triangle is 15cm.

The length of two equal sides are X cm

The length of the other side is 3cm

To Find:

The length of the equal sides.

We know,

Perimeter of a triangle= Sum of the sides

Therefore,

A\Q, (X + X + 3)cm = 15 cm

or, 2x + 3 = 15

or, 2x = 15 - 3

or, 2x = 12

or, x = 12/2

or, x = 6

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