Area Problems
The three sides of a triangle are 15, 25 and x units. Which one of the following is correct?

10
10
10? x ? 40
10 ? x

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Area Problems
The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:

15360
153600
307200
30720

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