Tags Area

Animals & Plants Arts & Entertainment Auto Beauty & Health Books and Literature Business Electronics Engineering & Technology Food & Drink History Hobbies Jobs & Education Law & Government Math People & Society Science Social Studies Sports Travel & Places

0

Subjects>Math>Math & Arithmetic

How man square feet in a 21ft diameter circle?

Anonymous

∙ 7y ago

Updated: 10/24/2023

The area of a circle is PI times the radius squared.

If the diameter is 21 feet, the radius is half that or 10.5 feet.

Area = PI * 10.5 * 10.5 = 346.36059 square feet

Wiki User

∙ 7y ago

Still curious? Ask our experts.

Chat with our AI personalities

Ezra

Faith is not about having all the answers, but learning to ask the right questions.

Chat with Ezra

Rafa

There's no fun in playing it safe. Why not try something a little unhinged?

Chat with Rafa

Jordan

Looking for a career mentor? I've seen my fair share of shake-ups.

Chat with Jordan

More answers

The area of a circle can be calculated using the formula: A = πr^2. If the diameter is 21ft, the radius would be half of that, which is 10.5ft. The area of the circle would be approximately 346 square feet.

AnswerBot

∙ 1y ago

Add your answer:

Earn +20 pts

Q: How man square feet in a 21ft diameter circle?

Write your answer...

Submit

Still have questions?

imp

Continue Learning about Math & Arithmetic

How many sq ft in 21ft diameter circle?

Area = pi*11.52 = 415.4756284 or 415.48 square feet to two decimal places

How many square feet in a 7' diameter circle?

There are about 38.48 square feet in a 7' diameter circle

What is the square feet of a circle with a diameter of 45 feet?

A 45-foot diameter circle has an area of 1,590.4 square feet.

What is the diameter of a circle with an area of 14 square feet?

The diameter is 4.222 feet.

How many square feet are in a circle 40 feet in diameter?

1256.64 square feet

Trending Questions

What would the value of 100 after 10 years if you earn 11 percent interest per year? Two third of a positive number and 25 by 216 of its reciprocal are equal the no is? The result of multiplying 12 by a number then subtracting 9? How can 4 plus 4 plus 5 equals 449? How many square feet in half a yard? What is x2 plus 15x equals 30? How many perpendicular angles do a triangle have? What is 6(2b-4)? Can a man lift one thousand kilograms? How many years is between 1988 and 2012? Can 2 go into 52? What are all the consecutive odd numbers up to 100 that are prime? How long is three inches? Is submission a abstract noun? How many acute angles are there in acute triangle? How do you calculate the number of days between two dates and return a 0 when cell is null? What is 7 divided by 16 in simplest form? Which number is not a prime or a composite number 21 15 8 and 1? What is the sum of the measures of the interior angles of a thirteen sided polygon? What is 11100011 base two to a base 10 number?

Resources

Top Categories

Product

Company

Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.