How do you calculate the area of a circle?
The equation is 2πr. That is 2 x pi x the radius (not the diameter!)
NO
Related Maths GCSE answers
All answers ▸Make x the subject 2x+3=3x-1
Solve the Simultaneous Equation: 2x + 3y = 15 and 5x + 4y = 13
Given a spinner divided in 3 sections numbered 1, 2 and 3, and that the arc of section 2 is double that of section one (~57.6 cm), calculate pi to 2 decimal places. The radius of the spinner is 30cm and the angle sub-intended by section 3 is 30 degrees.
How do I factorise quadratic equations?