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 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)
A running track is shaped like a stadium with two straight sides and two curved ends. Each straight side is 80 m long. Each curved end is a semicircle with a diameter of 70 m. Find the total length around the track. (Take π = 22/7.)