Find the perimeter of each figure. an isosceles triangle with congruent sides of 16.2 cm and a third side half that length

To find the perimeter of the triangle, you will add the lengths of each side.

We know two of the sides are 16.2 cm.  We also know that the third side is half this (16.2/2) or 8.1 cm.

16.2 cm + 16.2 cm + 8.1 cm = 40.5 cm

The perimeter of the triangle is 40.5 cm.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

The answer is pooifndoozlf