I WILL GIVE BRAINLIEST The perimeter of a triangle is 22cm. if one of the sides is 9cm, find the other sides if the area of the triangle is 20.976cm2

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?

How many 2/5s are in 1 and 1/2 plz someone me right now

Sandra wants to evaluate 2 cot her work is shown below. what did she do wrong?