Question

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

Answer 1

Answer:

A= two sides given as

= 10m

soo 2× 10m= 20m

perimeter- 42

now subtract 42-20m=22

now using herons formula find the area=

a=10

b=10

c=22

a+b+c by

2

= 10+10+22 = 42÷2 = 21

2

21-10=11

21-10=11

21-22=1

21×11×11×1

3×7×11×11

121√21