Question

17) Case Study - 1
An advertisement board is in the shape of a triangle whose two sides are of
lengths 120 ft., 122ft
, and perimeter is 264 ft.
120
i)
Semi-perimeter of the advertisement board is
a) 264 ft.
b) 132 ft.
c) 162 ft.
d) 134 ft.​

Answer 1

Answer:

264 feet

Step-by-step explanation:

Case Study - 1

An advertisement board is in the shape of a triangle whose two sides are of

lengths 120 ft., 122ft

, and perimeter is 264 ft.

120

Answer 2

Semi perimeter of advertisement board is 132ft

Explanation:

Using herons formula for semi perimeter of triangle

s = $\frac{a +b+ c}{2}$

But here

a +b+ c = perimeter of triangle

therefore,

s = $\frac{264}{2}$

s = 132ft