Question

A wire is (7x 3) metres long. A length of
(3x 4) metres is cut for use.
How much wire is left?
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Answer 1

Answer is 9m left

STEP BY STEP EXPLAINTION

first multiply 7X3 is 21

and then multiply second one 4X3 is 12

subtract 12 from 21 is 9

so answer is 9meters

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Answer 2

area of total wire= (7×3) metre

= 21 meters

area of wire that has been cut= (3×4) metre

= 12 metres

area of wire left= (21-12) metre

= 9 metres

= (3×3) metre

or (3²) metre

hope it will help you

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