Four students drew four different triangles in math class.
2.9 cm
3.3 cm
70
65°
80
Anna's triangle
Yuna's triangle
4.1 cm
4.4 cm
3.6 cm

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

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?

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the