Question

If a new phone screen is 19.68 cm2 larger than your current phone screen, with the dimensions 6.1 cm and 10.8 cm, then the new phone screen must have an area of ___, which is the product of 6.9 cm and ___. (A)6.9 cm,12.4 cm (B)65.88 cm2, 12.4 cm(C)85.56 cm2, 12.4 cm(D) 86 cm, 12 cm

Answer 1

Answer:

(C)85.56 cm², 12.4 cm

Step-by-step explanation:

The Area of the screen of the new phone is :

19.68cm² + Area of the current phone screen size

The current phone screen size has dimensions: 6.1 cm and 10.8 cm,

Area of the current phone screen size = 6.1 cm × 10.8cm

Area of the current phone screen size = 65.88 cm²

Hence, The Area of the screen of the new phone is :

19.68cm² + Area of the current phone screen size

= 19.68cm² + 65.88cm²

= 85.56 cm²

The new phone screen must have an area of 85.56cm², which is the product of 6.9 cm and ___

The is calculated as:

85.56cm²/6.9cm

= 12.4cm

Therefore, the new phone screen must have an area of 85.56cm², which is the product of 6.9 cm and 12.4cm

Option C is correct