Acar travels 90 miles in 1.5 hours. how many miles will it travel in 5 hours if its speed remains the same? a) 60 miles b) 180 miles eliminate c) 222 miles d) 300 miles hurry i need the answer.

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?