Find the dimensions of a rectangle with area 3 square meters whose perimeter is as small as possible.

The perimeter is minimum for Length and width both are .

Step-by-step explanation:

Area, A = 3 square metre

Let the length is L and width is W.

Area = L W

3 = L W.....(1)

The perimeter is given by

P = 2 (L + W)

Substitute the value of  from (1)

Now

It is alays positive, so the perimeter is minimum.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.