Circumference and Area of Circles - examples in the Real World by MNS

Question 1: Pizza Party Problem

safiyyahduo — 2024-06-18 05:52:07 UTC

Imagine you have a pizza with a diameter of 12 cm. If you want to put a string of cheese around the edge of the pizza, how long would the string of cheese be? Calculate the circumference of the pizza. Hint: Use the formula C = πd.

Answer and Explanation

safiyyahduo — 2024-06-18 05:52:07 UTC

To find the circumference of the pizza, we use the formula C = πd. Here, the diameter d is 12 cm. So, the circumference C = π x 12 ≈ 37.7 cm. Therefore, you will need approximately 37.7 cm of cheese string.

Question 2: Garden Circle

safiyyahduo — 2024-06-18 05:52:07 UTC

You have decided to plant a circular flower bed in your garden. The radius of the flower bed is 3 meters. What will be the area of the flower bed? Hint: Use the formula A = πr².

Answer and Explanation

safiyyahduo — 2024-06-18 05:52:07 UTC

To find the area of the flower bed, we use the formula A = πr². Here, the radius r is 3 meters. So, the area A = π x 3x3 = π x 9 ≈ 28.3 square meters. The area of your flower bed will be approximately 28.3 square meters.