The circle is inscribed in the triangle. find the perimeter of the triangle. a. 20 cm b. 24 cm c. 35 cm d. 48 cm

I think the answer is C.
Hope it helps

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.