The length of a rectangle is 10 cm. If its perimeter is 28 cm, find the area

  • A 30cm\(^2\)
  • B 40cm\(^2\)
  • C 60cm\(^2\)
  • D 80cm\(^2\)
waec 2022mathematics

The correct answer is B. 40cm\(^2\)

perimeter = 2( length + breadth) 

→ 28 = 2 (10+ b) 

14 - 10 = b

b = 4 

Area = length x breadth

10 x 4 â†’ 40cm\(^2\)

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