A rectangular picture measuring 9 centimetres by 13 centimetres is placed on a rectangular piece of card

Question

The area of the card is 270 square centimetres.

There is a border x centimetres wide on all sides of the picture

Write down an expression for the length of the card in terms of x.

Answer 1

Hi Phil, If there is a border of x on all sides of the picture, this means that both the length and with of card is equal to the length of the picture plus 2x and the width of the card is width of the picture plus 2x.

x + 13 + x = length of the card

+

9

+

x

= width of the card

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