Question

What is the perimeter of ABC?

Perimeter = ___ units.​

Answer 1

12 units

Explanation:

From the given figure,

AB=4 units & BC=3 units

By Pythagoras Theorem,
`AC^(2) = AB^(2) + BC^(2)`

Here,
`AC^(2) = 4^(2) + 3^(2)`

Thus, AC=5 units

Now, perimeter of triangle is equal to the sum of all sides.

Perimeter = AB + BC + AC = 4 + 3 + 5 = 12 units