PROBLEM SOLVING IN CIRCLE

Diagram shows a dining hall measuring 10 m long and 8 m wide. It is laid with nine circular carpets, each has a diameter of 200 cm, calculate the area that is not covered by the carpet in square metres. (state your answer in 2d.p without units) , use $\pi=\frac{22}{7}$  

The diagram shows a right angled triangle, PRT. R is the centre for the quadrant. Given RS = 14 cm, ST = 10 cm and PQ = 4 cm. Calculate the perimeter of the shaded region in cm. (use  $\pi=\frac{22}{7}$ )

KLM is a triangle. K is the midpoint of JL and M is the midpoint of LN. Calculate the area of shaded region in  $cm^2$  . ( use  $\pi=3.142$  )

Given diameter BOD and Aoc perpendicular to each other. OE=ED=10 cm. calculate the area of the shaded regions in  $cm^2$ . (use  $\pi=\frac{22}{7}$  )

The diagram shows a round window with circular ring with the same size. the radius of the windows is 45 cm. Calculate the area that is not covered by the ring in  $cm^2$  . use $\left(\pi=3.142\right)$