Question

A rectangle has twice the area of a square. The rectangle is 18 in. by 4 in. What is the perimeter of the square.

Answer 1

Answer:

given area of rectangle is twice the area of square.

area of rectangle is equal to 18×4=72 square metre

Therefore area of square is half of area of rectangle which is equal to 36 square metre

Side of the square is square root of area of the same square

The side of the square is 6cm

perimeter is 6×4=24 metre

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Answer 2

Given

length = 18inch

breadth = 4inch

Let side of square be x

=>area of square = side^2 = x^2

=>area of rectangle = length * breadth

According to question

=>2x^2 = 18*4inch^2

=>x^2 = 36inch^2

so

=x = 6 imch

=>now we know that side of square = 6cm

=>perimeter of square = 6inch*4inch= 24inch^2