Question

Find the area of triangle whose two sides are 18 cm and 10 cm and the perimeter is 42 cm.​

Answer 1

18+18=32+10=42 18 2 sides or equal

Answer 2

Answer:

First we will find the third side of triangle = 14 cm

Now we will find the area of triangle using Herons formula.

s = 42/2 = 21

area of triangle = under root 21 × ( 21 - 18 )× ( 21 - 10) × (21 - 14 ) square cm

= 21 under root 11 square cm