Mensuration Practice Test 2

Question : 21 of 40

Marks: +1, -0

How long will a child take to cross a square park diagonally at 3.6 km/h, if the area of the park is 31,250 sq. m?

Solution:

Side of the square park =

√{31250}

m
So, diagonal =

√{(31250)^3+(√{31250})^2}

√{31250+31250}

√{62500}

= 250 m
Speed = 3.6 km/h
= 3.6 ×

5/{18}

m/s
Distance = 250 m
Time taken =

{250×18}/{3.6×5}

= 250 s

Go to Question:

Prev Question

Next Question