Question

If the perimeter of a triangle is 32 cm and two side is 8 cms and 11 cms, then find the area of ​​its area.

Answer 1

Answer:

8 + x + 11 = 32

x = 13

so as per herons formula

square root   s(s-a)(s-b)(s-c)

s = a+b+c/2

so s = 16

square root of 16*8*5*3

= square root of 1920

Step-by-step explanation:

Answer 2

perimeter=36 cm , a=8 cm and b=11 cm
c=32 cm -(8+11)cm=13cm
2s=32 =s=16

s-a=(16-8)=8
s-b=(16-11)=5
s-c=(16-13)=3

$heron \: formula = \sqrt{s(s - a)(s - b)(s - c)} \\ \sqrt{16 \times 8 \times 5 \times 3 \\ 8 \sqrt{30}$