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WAEC Mathematics 2016 Paper
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© africaexams.com
Question : 6
Total: 49
On a map, 1cm represent 5km. Find the area on the map that represents 100km
2
.
2cm
2
4cm
2
8cm
2
8cm
2
Validate
Solution:
On a map, 1cm represents 5km. Then it follows that 1cm
2
represents 25km
2
. Acm
2
represents 100km
2
. By apparent cross-multiplication, 1cm
2
x 100km
2
= Acm
2
x 25km
2
therefore A =
100
25
= 4cm
2
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