Question

If base



of an isosceles triangle is 12 cm and its perimeter is 35 cm find the area of triangle with solution

Answer 1

perimeter -base = sum of two sides
let equal sides be x.
so
$2x = 35 - 12 \\ 2x = 23 \\ x = 12.6cm$

now you can find area using isoscles triangle area formula

Answer 2

isosceles triangle = 12 cm
perimeter = 35 cm
perimeter - base = sum of two sides
let equal sides be = y
2y = 35- 12
2y = 23
y = 2/ 23
y = 12.6 cm .
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