CIRCLE | Baamboozle - Baamboozle | The Most Fun Classroom Games!

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If diameter = 28 cm, so radius = ... cm

28 : 2 = 14 cm

Part inside the circle between a chord and minor arc is ....

segment

Find area of a circle with radius 7 cm. (take π = 22/7)

Area = 22/7 x r x r = 22/7 x 7 x 7 = 154 cm²

Area of a circle with diameter 28 cm is ... cm².(Take π = 22/7)

Radius = 28 : 2 = 14 Area = 22/7 x 14 x 14 = 616 cm²

Radius = 10 cm. (Take π = 3.14) Area of a circle = ... cm².

Area = 3.14 x r x r = 3.14 x 10 x 10 = 314

Radius = 7 cm. (Take π = 22/7) Circumference of a circle = ... cm

Circumference = 22/7 x 2 x r = 22/7 x 2 x 7 = 44 cm

In figure, Which line is diameter?

AB

in the figure, BOC is a ...

sector

If radius = 4 cm, so diameter = ... cm

2 x 4 cm = 8 cm

Radius a quadrant is 7 cm. (Take π = 22/7) Perimeter = ... cm

(1/4 x 22/7 x 2 x 7) + 7 + 7 = 25 cm

Diameter = 14 cm. (Take π = 22/7). Circumference of a circle = ... cm.

Circumference = 22/7 x 14 = 44 cm.

In figure, Which line is a sector ?

BOC

Find a perimeter of a quadrant with diameter 4 cm. (take π = 3.14)

Perimeter = (1/4 x 3.14 x d ) + d = (1/4 x 3.14 x 4) + 4 = 3.14 + 4 = 7.14 cm

A diameter cuts a circle into ... semicircles.

2

Diameter = 49 cm. Circumference of a circle = ... cm.

Circumference = 22/7 x d = 22/7 x 49 = 154 cm.

Find perimeter of a semicircle with diameter 2 cm.(Take π = 3.14)

Perimeter = (1/2 x 3.14 x d ) + d =(1/2 x 3.14 x 2) + 2 = 3.14 + 2 = 5.14 cm

Find circumference of a circle with radius 10 cm. (take π = 3.14)

62.8 cm