Form 2 Circle KSSM - KBAT

• Given the radius and area of the circle, calculate the angle at the centre of the circle. (answer without degree ° )

• Given the radius and area of the circle, calculate the angle at the centre of the circle.

  • Radius = 21 m

  • Area of sector = 27.72 m²

The diagram below shows a plan for a park. ABCD is a rectangle.

APB and DQC are semicircles centred at X and Y.

Given AB = 7 cm and AC = 25 cm.

Calculate the perimeter of the park in cm.

The diagram below shows the quadrant OPQ centred at O.

ORST is a square. Given OP = 10 cm and OR = 7 cm.

Calculate the area of the shaded region in cm². State the answer in π.

(Remark: copy the symbol π here)

The diagram shows a circle with centre O.

PQR and STU are straight lines.

Given PQR = STU = 6 cm, calculate the length of

OT. (write answer in cm)

The 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.
(write answer in 2 decimal points and m²)

Find the area of the quarter circle. (Take π=3.14)

__________ cm²