Find the area of the enclosed region, PXROY correct to the nearest whole number

  • A 96cm2
  • B 116cm2
  • C 154cm2
  • D 192cm2
  • E 385cm2
waec 1991mathematics

The correct answer is A. 96cm2

Area of the bigger semi circle P x RO =

πr2/2 = 22/7 x 49/2 = 77cm2

2nd Area of the smaller circle DYO =

22/7 x 3.52/2 = 19.25

Total Area = 77 + 19.25 = 96.25 = 96.00

Previous question Next question