Question

does a=2.1 B=7.2 c= 7.5 make a right triangle

Answer 1

First you use the Pythagorean Theorem which is a^2 + b^2 = c^2.

Next you apply the numbers with the Pythagorean Theorem:

2.1^2 + 7.2^2 = c^2

4.41 + 51.84 = c^2

56.25= c^2

√56.25 = √c^2

c = 7.5