IGCSE Mathematics Paper-1: Specimen Questions with Answers 9 - 12 of 175

Question number: 9

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A United Kingdom Coin is a cylinder with a diameter of 38.61 millimeters and a thickness of 2.89 millimeters. Calculate, in cubic millimeters, the volume of the coin.

[The volume of a cylinder, radius r, height h, is . ]

A United Kingdom £5 Coin

A United Kingdom £5 Coin

Explanation

Here, coin is having the shape like a cylinder with a diameter of 38.61 millimeters and a thickness of 2.89 millimeters.

We need to find the volume of the coin, so formula of a cylinder: , which is given,

Where

So, volume of coin =

Question number: 10

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Solve as a single fraction.

Explanation

Here,

Question number: 11

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Harsh’s height is 185 cm, to the nearest centimeter. Complete the statement about the limits of his height.

Explanation

Here, He is greater than or equal to 184.5 centimeters but less than 185.5 centimeters.

In mathematical form:

Question number: 12

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The River Nile is 6700 kilometers long in nearest hundred kilometers. What can be said about the length, L kilometers, of the River Nile.

Explanation

Here, The River Nile is 6700 kilometers long.

  • So, nearest hundred kilometers can be 6600 km and 6800 km.
  • So, the statement about the length can be:

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