Question

the perimeter of an isosceles triangle is 60 cm and its base is 15 cm find the area of the triangle​

Answer 1

Answer:

perimeter = 60

the base = 15

60.÷ 15

4

Answer 2

Answer:  The required area is 159.009 cm²

Step-by-step explanation:

Given: Perimeter; P = 60 cm

           Base; b = 15 cm

as we know area of isosceles triangle when base and perimeter is given

$A= \dfrac{1}{4}b\sqrt{P(P-2b)}  \\\\= \dfrac{1}{4} \times 15 \sqrt{60(60-2\times15)} \\\\=\dfrac{1}{4} \times 15 \sqrt{60\times 30} = 159.09cm^2$

Hence, the required area is 159.009 cm²