The diagonal of a rhombus are 12cm and 5cm. calculate its perimeter

  • A 26cm
  • B 24cm
  • C 17cm
  • D 34cm
waec 2021mathematics

The correct answer is A. 26cm

Perimeter of a Rhombus = 4L or 2√( d1\(^2\) + d2\(^2\))

P = 2√(12\(^2\) + 5\(^2\))

P =  2√(144 + 25)

P =  2√169 = 2 * 13

P = 26cm

Previous question Next question