Question

A triangular wall of a garden has been painted (see the given figure) from one side.

The sides of the wall are 15m , 12m and 5m .​

Answer 1

Answer:

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Answer 2

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Step-by-step explanation:

Given: 

⇒Sides: a=15m, b=11m and c=6m

⇒P=15+11+6=32m

⇒Semi perimeter=S=232, 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=202 m2