Circles
Q1. Calculate the circumference of a circle with a radius of 12cm. (Take π to be 3.14)
Q2. Calculate the diameter of a circle with a circumference of 81.64m. (Take π to be 3.14)
Q3. Calculate the area of a circle with a diameter of 22cm. (Take π to be 3.14)
Q4. The diagram below gives the dimensions in imperial (non metric) units of a standard football pitch, the pitch at Birmingham United FC has a pitch conforming to these dimensions:
At the end of the season which had a lot of home matches, both of the "18 yard boxes" and the "centre circle" are badly in need of reseeding. The ground management bought in 8 industrial size boxes of grass seed, each of which is said to have a coverage of 250 yd²
The grounds keeper believes that it will not be enough to do the job. Use the information given to calculate whether or not you believe he is correct or otherwise, and explain why.
Q5. A 16 inch pizza is cut into 8 sections, calculate the area of one of the sections. (Take π to be 3.14)
Q6. Calculate the area of a sector of a circle with a radius of 7cm an inter radial angle of 32 degrees.. (Take π to be 3.14)
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