CIE Mathematics Paper-1: Specimen Questions 90 - 92 of 175

Question number: 90

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A note of 10 rupees of India like a rectangle is having 137 mm of width and 63 mm of height. Calculate the area of the note.

[The area of a rectangle, width w, height h, is (w×horl) . ]

A note of 10 rupees of India

A note of 10 rupees of India

Showing the note of 10 rupees of India with 137 mm of width and 63 mm of height

Explanation

Here, note is having the shape like a rectangle with 137 mm of width and 63 mm of height.

We need to find the area of the note, so formula of a rectangle area: w×h , which is given,

So, area of note = 137×63=8631mm2

Question number: 91

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The surface area of the Moon is 37 900 000 kilometers2 . Write this number in standard form.

Explanation

Here,

(a) The surface area of the Moon is 37 900 000 kilometers2.

So, standard from will be: 37.9×106kilometers2=37.9millionkilometers2.

Question number: 92

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Factorize completely a2+5a+6.

Explanation

Here,

  • Factoring is the decomposition of an object into a product of other objects or factors, which gives the original equation when multiplied together.

So, a2+5a+6a2+2a+3a+6a(a+2)+3(a+2)(a+3)(a+2).

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