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 400\pi\text{ m}400π m400, pi, start text, space, m, end text. What is the diameter ddd of the lake?

Answer 1

400

Explanation:

Answer 2

Diameter of the circular lake is 400 m

Explanation:

Step 1:

Given that the circumference of the circular lake = 400π, find its diameter.

Circumference of a circle = π × diameter of the circle

⇒ Diameter = Circumference/π

= 400π/π = 400 m