A rectangular board has a length of 15cm and width x cm. If its sides are doubled, find its new area.

  • A 60x cm\(^2\)
  • B 45x cm\(^2\)
  • C 30x cm\(^2\)
  • D 15x cm\(^2\)
waec 2019mathematics

The correct answer is A. 60x cm\(^2\)

New are = (2 x 15) x (2 x \(x\)) 

= 60cm\(^2\)

Previous question Next question