Question

if the sides of a triangle are 5cm, 6cm and 7cm, then area of the triangle is​

Answer 1

Answer:

6√6 cm²

Step-by-step explanation:

Find the perimeter:

p= 5 + 6 + 7 = 18 cm

Find the semi-perimeter:

s = 18 ÷ 2  = 9 cm

Heron's formula:

Area = √s(s - a)(s - b) (s - c)

Find Area:

area = √9(9 - 5)(9 - 6)(9 - 7)

area = √216

area = 6√6 cm²

Answer 2

Answer:

Step-by-step explanation: