Answer:
$56×2=$112 and $45×4=$180 so $112+$180= $291
11 is the greatest common factor
Its A trapezium
For Calculations Refer to the attachment
Finding the square<span> root of a </span>number<span> is the inverse operation of squaring that </span>number<span>. Remember, the </span>square<span> of a </span>number<span> is that </span>number<span> times itself. The perfect squares are the squares of the whole </span>numbers<span>. The </span>square<span> root of a </span>number<span>, n, written below is the </span>number<span> that gives n when multiplied by itself.
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Multiply first, then add. 12 times 7 = 84. Then add 8. 84 + 8 = 92.