Question

Picture is not drawn to scale.

The dimensions of rectangle B are twice the dimensions of rectangle A. The area of rectangle A is 128 cm2.

What is the area of rectangle B?

Answer 1

The area of rectangle B is 256 cm²

What is Area of rectangle?

The area occupied by a rectangle within its boundary is called the area of the rectangle.

Thus, the formula for the area, 'A' of a rectangle whose length and width are 'l' and 'w' respectively is the product

Area of rectangle= length  × width.

It is given that the dimensions of rectangle B are twice times the dimensions of rectangle A.

Let dimensions of rectangle B are l× B.

Area of rectangle is

A= length *  breadth

Area of rectangle A = 128

So, Area of rectangle B

=2( l * B)

= 2l* 2B

=2( l * B)

=2 * 128

= 256 cm²

Hence, the area of rectangle B is 256 cm²

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