How do I work out the area of a quarter circle with radius 6cm?

The easiest way to do this is to first work out the area of the whole circle. To work out the area of a circle, the equation is area = πr2 , where r is the radius. So, to work out the area we work out π x 62. For the most accurate answer, we should keep the answer in terms of π . π x 62 = 36π . To calculate the area of a quarter circle, we then need to divide the area by 4, as a quarter circle is 1/4 of a circle. 36π /4 = 9, so the area of the quarter circle is 9π .

CC

Related Maths GCSE answers

All answers ▸

Solve the inequality x^2+2x-8<0


Alice will play 2 games of tennis against Bob. Alice’s chances of winning each game is 0.7. Work out the probability of Alice winning exactly one match.


How do I solve simultaneous equations when one is quadratic? For example 3x^2 -2y = 19, 6x-y-14=0


Make 'a' the subject of the formula: p = (3a + 5) / (4 - a)