Saved Bookmarks
| 1. |
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 it circumference , and find that it’s 400 m. What is the diameter d of the lake? |
|
Answer» <P>Given : a really BIG circular lake. , perimeter of the lake 400 m To FIND : Diameter of Circular Lake Step-by-step explanation: Circumference of circle is given by 2 π R where π = 22/7 or 3.14 R = Radius Its given that Circumference of circular lake = 400 m => 2 π R = 400 => R = 200/π => R = 200 /(22/7) => R = 700/11 Radius of Lake = 700/11 m Diameter of Lake = 2 * Radius = 2 * 700/11 = 1400/11 = 127.27 m Diameter of Lake = 127.27 m Learn more: if numerical value of the circumference and area is given circle are ... the perimeter of a semicircular protractor with diameter 10cm ... ab is a diameter of a circle and P is any point on the circumference ... |
|