Answered

Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

What is the circumference of a circle with a diameter of 21 cm? Approximate using π = 22/7.

A. 7 cm
B. 33 cm
C. 66 cm
D. 132 cm

Sagot :

GinnyAnswer
To find the circumference of a circle, we use the formula:

[tex]\[ \text{Circumference} = \pi \times \text{Diameter} \][/tex]

Given the diameter of the circle is [tex]\( 21 \)[/tex] cm and the approximation [tex]\(\pi = \frac{22}{7}\)[/tex]:

[tex]\[ \text{Circumference} = \frac{22}{7} \times 21 \][/tex]

First, notice that [tex]\( 21 \)[/tex] can be simplified in the fraction:

[tex]\[ \frac{22}{7} \times 21 = 22 \times 3 = 66 \][/tex]

Thus, the circumference of the circle is [tex]\( 66 \)[/tex] cm.

Among the given options, the correct answer is:

[tex]\[ \boxed{66 \, \text{cm}} \][/tex]
We hope our answers were helpful. Return anytime for more information and answers to any other questions you may have. We hope this was helpful. Please come back whenever you need more information or answers to your queries. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.