What is the measure of the angle that is exterior to S? What is the measure of the angle that is exterior to R? What is the sum of the triangle's exterior angles?

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?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

What is the probably of getting heads when poing a coin and getting a number greater than or equal to 5 when rolling a single diea) 1/6b) 1/3c) 1/4d) 1/12