Question

pl give me the ans of Q-13

Answer 1

Answer:

60 sq cm

Step-by-step explanation:

Using Heron''s formula for calculation of area of triangle when sides are given is

A = √s(s-a)(s-b)(s-c)  where s = a + b + c /2

a = 13 cm , b = 13 cm , c = 10 cm

s= a + b + c/2 = 36/2 = 18 cm.

A = √18(18 - 13) (18 - 13) ( 18 - 10)

   = √18 * 5 * 5 * 8

   = √3600 = 60 sq cm.