Question

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

Answer 1

Step-by-step explanation:

First side :18

Second side:10

Let the third side be :x

A.T.O

18+10+x=42

28+x=42

x=1 5 ANS

Answer 2

A=15
1 st is 18 cm
2 nd is 10 cm
3 rd is A
Perimeter is 42cm
So 18+10+A=42 cm
28+A =42
So,42-28= 15 cm there fore A=15 cm



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