Question

Find the area of a triangle, two sides of which are 10 cm and 15 cm and the semiperimeter
is 20 cm​

Answer 1

Answer:

Given:-

Sides - 10cm and 15cm

Half Perimeter = 20cm

___________________________

Perimeter = (a + b + c)

Half Perimeter = a + b + c /2

20 = a + 10 + 15/2

40 = a + 25

40 - 25 = a

___________________________

Area of Triangle = √[s(s-a)(s-b)(s-c)]

= √[20(20-10)(20-15)(20-15)]

= √[20 × 10 × 5 × 5 ]

Area of Triangle= √5000 cm²

Answer 2

Answer:

$area \: of \: a \: triangle \: is \: \sqrt{5000} cm ^{2}$