Question

The perimeter of a isosceles triangle is 30cm and it's base is 2/3 times the sum of equal sides. find the area of triangle​

Answer 1

Step-by-step explanation:

here's your answer

please follow me please please please please

Answer 2

Let the third side of triangle X

Perimeter = 30cm

$semi \: parameter(s) = \frac{peimeter}{2}$

=> 2s = 30, S = 15

=> 12 + 12 + X = 30 => x = 6

$a = \sqrt{s(s - a)(s - b)(s - c)}$

Herons formula

$a = \sqrt{15 = (15 - 12)(15 - 12)(15 - 16)} = \sqrt{15(3)(3)(9)}$

$a = 9 \sqrt{15 \: {cm}^{2} }$

hope this will help you...