Question

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 400π m
What is the diameter d of the lake?

Answer 1

Answer:

i don't know its answer so i am sorry

Answer 2

Step-by-step explanation:

given: circumference of the lake =400π

2πr=400π

r=400π\2π

r=200.

we know, diameter=2r

diameter=2*200

diameter=400.