On a map, 1cm represent 5km. Find the area on the map that represents 100km2..... Question 25913

On a map, 1cm represent 5km. Find the area on the map that represents 100km².

2cm²

4cm²

8cm²

Correct answer is B

On a map, 1cm represents 5km. Then it follows that 1cm² represents 25km². Acm² represents 100km². By apparent cross-multiplication, 1cm² x 100km² = Acm²x 25km²

therefore A = \(\frac{100}{25}\) = 4cm²

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