Question

Find the area of an isosceles triangle if each of it's equal sides

are 10cm long and perimeter is 35cm.​

Answer 1

Answer:

18.75√7 cm²

Step-by-step explanation:

Side 1=10cm

Side 2=10cm

Side 3 = 15cm

Semi perimeter 17.5cm

area =

$\sqrt{(17.5)(17.5 - 10)(17.5 - 10)(17.5 - 15)}$

$\sqrt{17.5 \times 7.5 \times 7.5 \times 2.5}$

$2.5 \times 7.5 \times \sqrt{7}$