Mensuration Practice Test 3

Question : 27 of 40

Marks: +1, -0

A right circular hollow cylinder kept vertically on its circular base has a height of 20 cm and radius of 10 cm. A sugar grain is kept inside this cylinder on its circular base at the periphery. If an ant is at the top rim of the same cylinder and diagonally opposite to the sugar grain, the minimum distance the ant should travel to reach the sugar grain is approximately:

82.86 cm
51.43 cm
37.25 cm
65.96 cm

Validate

Solution:

AB = height of the cylinder

BC =

1/2

circumference of base
x = Shortest distance
x =

√{(20)^2+(10π)^2}

√{400+100(3.14)(3.14)}

√{400+985.96}

√{1385.96}

= 37.25 cm

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