Question

Heron's formula Exercise 12.1 Question 3

Answer 1

Step-by-step explanation:

⇒Sides: a=15m, b=11m and c=6m

⇒P=15+11+6=32m

⇒Semi perimeter=S=

2

32

, S=16m

⇒A=

s(s−a)(s−b)(s−c)

(Heron's formula)

⇒A=

16(16−15)(16−11)(16−6)

⇒A=

16×1×5×10

=

800

=20

2

m

2