Question

You are choosing a new cell phone. The screen on your current phone is 10.8 cm high

and 6.1 cm wide. The screen on the new phone is 12.4 cm high by 6.9 cm wide. How
much larger is the area of the new screen than the area of the old screen?

Answer 1

The new phone has 19.68 sq cm area more the old screen phone.

Explanation:

The dimensions of the present phone are:

H = 10.8 cm high , W = 6.1 cm wide.

Area of the phone = LENGTH X WIDTH

⇒ Area of the present phone = 10.8 cm x 6.1 cm

= 65.88 sq cm.

The dimensions of the new phone are:

H' = 12.4 cm high , W' = 6.9 cm wide.

⇒ Area of the new phone = 12.4 cm x 6.9 cm

= 85.56 sq cm.

Difference in the area = Area of new Phone - Area of present Phone

= 85.56 sq cm. - 65.88 sq cm.

= 19.68 sq cm

or, difference in the area = 19.68 sq cm

Hence, the new phone has 19.68 sq cm area more the old screen phone.