Mathematics for IGCSE & O level - Mensuration (Section 1 - No. 41)
If a farmer wants to fence a rectangular field that is 50 meters long and 25 meters wide, how much fencing does he need?
75 meters
125 meters
150 meters
1,250 meters
Explanation
Perimeter = 2*(l+w) = 2*(50+25)=150
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