Question

Find the area of triangle whose sides 9cm ,12cm and 15 cm .

a. 52 cm2
b. 62 cm2

c. 63 cm2
d. 54 cm2​

Answer 1

Answer:

d. 54 cm2

hope it helps..

Answer 2

answer: 54 cm^2 - option d.

this sum can also be solved by using heron's formula.

$\sqrt{s(s - a)(s - b)(s - c)}$

assuming,

a = 9cm

b= 12 cm

c = 15 cm.

$s = \frac{a + b + c}{2} = \frac{9 + 12 + 15}{2} = \frac{36}{2} = 18$

by substituting these values in the given formula we get the same answer as 54 cm^2.