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kogti [31]
3 years ago
14

A rectangular piece of wood is 12 centimeters longer than it is wide. A strip 1 centimeter wide is cut off all around. This decr

eases the area by 120 square centimeters. What were the original dimensions?
Mathematics
1 answer:
denis-greek [22]3 years ago
7 0

Answer:

Length 37 cm, width 25 cm.

Step-by-step explanation:

Let the original dimensions be length x and width x - 12 cms.

The new dimensions will be length (x - 2) and width (x - 12 - 2) = x-14 cm.

So , from the areas, we have:

x(x - 12) - (x - 2)(x - 14) = 120

x^2 - 12x  - (x^2 - 16x + 28) = 120

-12x + 16x - 28 = 120

4x = 148

x = 37 cms

So the length was 37 cm and the width was 37-12 = 25 cm.

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Answer:

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Step-by-step explanation:

We need to break 200 down into prime numbers

200 = 20*10  These are not prime

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