How do I find the area of a circle C with diameter 14cm?

The formula for the area of a circle is π r2. To use this formula we first need to find r, the radius of the circle. The radius is the distance from the centre of the circle to the edge, and is equal to half of the diameter. The radius of this circle is half of 14, or 14/2 = 7. Now we can use the formula for area.  π x 7= π x 49 = 153.938..... or 159.3 to 1 decimal place. It is important not to forget units with your final answer if they are given in the question, so the area of our circle C = 159.3 cm2.

Answered by Tamsyn H. Maths tutor

16697 Views

See similar Maths 13 Plus tutors

Related Maths 13 Plus answers

All answers ▸

A box has length 3x cm, width 2x cm and height x cm. The total surface area of the box is 2662 cm^2. Find an equation for the surface area of the box, and use this to find the true values of the dimensions of the box.


What is 14% of £525?


How is our blood sugar regulated?


Find the value of 0.3 × 0.2


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences