A circle has a diameter of 21 cm. Find its circumference. (Take π = 22/7.)
FREE QUIZ · PRIMARY 6 MATHEMATICS
Circles
Five MCQs on Circles. Pick an answer, see the specific misconception. The diagnosis comes after the score.
The area of a circular coaster is 78.5 cm². What is the radius of the coaster? (Use π = 3.14)
A circle has a circumference of 44 cm. What is the area of the circle? (Take π = 22/7)
A square has side 28 cm. Four identical quarter circles, each with radius 14 cm, are drawn inside the square — one centred at each corner. The four quarter circles together cover the central region of the square. Find the area of the SHADED corner regions (the parts of the square NOT covered by any quarter circle). (Take π = 22/7.)
A square has a side of 10 cm. A quarter circle with radius 10 cm is drawn inside the square with its centre at one corner. What is the area of the shaded region that is inside the square but outside the quarter circle? (Use π = 3.14)