an isoceles triangle has perimeter 30 cm and each of the equal side is 12 find its area of the triangle
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let the third side be x
perimeter of triangle is =sum of all sides
30=12+12+x
x=6cm
Using herons formula
s=a+b+c/2
s=12+12+6÷2
s=15cm
area of triangle = √s(s-a)(s-b)(s-c)
=√15×15-12×15-12×15-6
now by solving this u will get the answer
let the third side be x
perimeter of triangle is =sum of all sides
30=12+12+x
x=6cm
Using herons formula
s=a+b+c/2
s=12+12+6÷2
s=15cm
area of triangle = √s(s-a)(s-b)(s-c)
=√15×15-12×15-12×15-6
now by solving this u will get the answer
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