Calculate the area of a circle with a diameter of 20mm

Firstly draw the circle and label the diameter. Then calculate the radius by dividing the diameter by 2 (radius is 10mm). Using the formula A=pi*r^2 to find the area. This gives the answer as 100pi mm^2 or 314.2 mm^2.

Answered by Ella C. Maths tutor

13783 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do I solve 7x – 8 = -3x + 2?


Find the equation of the line that passes through the (4,6) and (9,-4)


Given that your grade for your computing is based on 5 coursework that weigh differently, and you know the results of 4: 80, 75, 50 and 90 which weighs 10%, 20%, 45% and 5%. What grade do you need in your last coursework to achieve at least a B (70%)?


The equation of line L1 is y = 3x-2 and the equation of line L2 is 3y-9x+5 = 0. Show that these two lines are parallel.


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