Molly wants to put a fence around an area. The fence will follow the diagram of the triangle shown below.
10 ft
About how much fencing does Molly need?
A 28 ft
B 38 ft
C 43 ft
D 49 ft

Molly needs 43 ft of fence

Step-by-step explanation:

Given fig is a right angle triangle area.

The base (b) = 10 ft

The length of the hypotenuse (h) = 18 ft

To find the length of the fence around the area.

Formula

By Pythagoras theorem,

Now,

18² = l²+10²

or, l² = 18²-10²

or, l = √(18²-10²)

or, l = 14.9 = 15 (approx)

Perimeter of the triangular park = 10+18+15 ft = 43 ft

Hence,

Molly needs 43 ft of fence.

answer: 45