PLEASE I NEED THIS ASAP 1. At Parker’s Pizza Parlor, the total cost of an order of 5 slices of pizza is $12.37. This price includes $1.12 in sales tax. Let p represent the cost of 1 slice of pizza.

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?