Question

The sides of a triangle are 42 cm, 34 cm and 20 cm. Calculate it's area.

Answer 1

Answer:336 cm² plz mark as brainliest

Step-by-step explanation:

herons formula = √s(s-a)(s-b)(s-c)

here a = 42 b= 34 c = 20

s = 1/2(a+b+c)

= 1/2 (42+34+20)

= 1/2 * 96

= 48

thus area = √48(48-42)(48-34)(48-20)

= √48 * 6 * 14 * 28

=√112896

= 336 cm²