Select the statement that is true about squares from the choices below.
select one:
a. only two sides of a square have congruent sides.
b. the diagonals of a square do not bisect each other.
c. the diagonals of a square are perpendicular to each other.
d. no squares are similar.

The highest common factor of 132 and 220

41/17 as a decimal rounded to the nearest hundredth

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?