The circumference of a circle of radius 7 cm (use π ≈ 22/7):
A22 cm
B33 cm
C44 cm
D154 cm
Answer & Solution
Correct answer: C. 44 cm
Circumference = 2πr = 2 × (22/7) × 7 = 44 cm.
(Note: 154 cm² is the AREA of this circle, not perimeter — a classic distractor.)
Keep practising Mensuration: Perimeter and Area
Browse all Mensuration: Perimeter and Area questions for CBSE Class 9, or explore more Mathematics topics.
Related questions
Match Heron's formula components for triangle area:Match each hemisphere surface area component (radius r):Match each circular solid with its volume formula:Match each circular 3D solid with its curved surface area (CSA) formula:Spot the one that does not fitFill the gaps on surface areasFind a cone's curved surfacePart of a cone or a sphere