Question

What is the length (in centimeters) of side SU of the triangle?

A. 70 centimeters
B. 77 centimeters
C. 90 centimeters
D. 98 centimeters

Answer 1

The Answer is A. You can also use an online calculator to check this if you feel like you need to. hope this helps.

Answer 2

The answer is A. Because the triangle is a right triangle you can use the equation a^2 + B^2 = C^2. This formula is known as the Pythagorean theorem. A and B are interchangeable as the legs of the triangle so it doesn’t matter which number you use first.
(42•42) + (56•56) =

1764 + 3136 = 4900

So the square root of 4900 is 70.