The width of a rectangle measures (2.5p + 1.4) centimeters, and its length measures (4.2p - 8.1) centimeters. Which expression represents the perimeter, in
centimeters, of the rectangle?
-3.9 + 3.9p
O 6.7p - 6.7
Submit Answer
0 -13.4+ 13.4p
O 7.8p - 7.8

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?