Question

The painting by itself is a rectangle with length 20 cm, and width 16 cm.The painting and frame together form a larger rectangle with length 25 cm, and width 20 cm

Answer 1

the number 6,900 is the answer .

Answer 2

The area of the frame = 180 $cm^{2}$

Step-by-step explanation:

The complete question:

The painting by itself is a rectangle with length 20 cm, and width 16 cm.The painting and frame together form a larger rectangle with length 25 cm, and width 20 cm, find the area of the frame. Assume no overlap between the frame and painting.

To find, the area of the frame = ?

∴ The area of the frame = The area of painting and frame together - The area painting by itself is a rectangle

The area painting by itself is a rectangle = 20 cm × 16 cm

= 320 $cm^{2}$

Also,

The area of painting and frame together = 25 cm × 20 cm

= 500 $cm^{2}$

∴ The area of the frame = 500 $cm^{2}$ -  320 $cm^{2}$

=  180 $cm^{2}$

Hence, the area of the frame = 180 $cm^{2}$