Question

Sarah hopes to be 5 feet tall by her next birthday. Right now, she is 148 centimeters tall. About how many more centimeters does she need to grow before her next birthday to reach 5 feet? Use the drop-down menus to explain how to solve the problem. the number of inches in 5 ft by 2.54 cm. There are about cm in 5 ft. Then to find the number of centimeters that Sarah still needs to grow. She needs to grow cm to reach 5 ft.

Answer 1

4.4 cm

Explanation:

To solve this problem, we have to remind the conversion factor between feet and cm. We know that:

1 foot = 12 inches

1 inches = 2.54 cm

So,

`1 ft = 12 \cdot 2.54 =30.48 cm`

In this problem, Sarah's height right now is

h = 148 cm

She wants to be 5 feet tall by her next birthday: it means that her height should be

`h'=5 ft \cdot 30.48 =152.4 cm`

Therefore, she needs to grow by:

`h'-h=152.4-148=4.4 cm`

So, she needs to grow 4.4 cm more in order to be 5 feet tall.