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A rectangular cricket practice net is 22 m long and 9 m wide. What length of netting is needed to go once around its base?

Class 6MensurationMensuration
  • A31 m
  • B44 m
  • C62 m
  • D198 m

Step-by-Step Solution

m. The commonest error is answering 31 m — that is only length + breadth, which counts each pair of sides once instead of twice. 198 m is the area , which is not a boundary length at all.
Answer: C) 62 m

Key idea: Perimeter shortcuts for special shapes

**Rectangle**: opposite sides are equal, so perimeter = l + b + l + b = 2(l + b).

**Square**: all four sides equal, so perimeter = 4 × s.

**Equilateral triangle**: all three sides equal, perimeter = 3 × s.

**Regular polygon with n sides of length s**: perimeter = n × s.

These shortcuts are just 'add the sides' written shorter.

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