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

12207 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the equation 5(2c - 3) = 19


What is a vector?


How would you solve a quadratic equation (e.g. x^2-8x+15=0)?


Solve the following system of equations simultaneously to find the values of x, y and z. 2x+3y+4z=3, -x-y+z=1, 2x+y-z=0


We're here to help

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