Question

Suppose a building inspector orders the height of a ceiling to be 8 feet tall, but the workers buy lumber that is only 50 centimeters tall. How many pieces of lumber will they have to stack to create an 8-foot ceiling? Explain your answer. (Hint: 1 inch = 2.54 centimeters.)

Answer 1

you could start by converting the 8 foot ceiling to centimeters, you can easily do this like this
1ft=12in so 8(12)=96 inches
then you could convert to cm
1in=2.54cm so (96)(2.54)=243.84cm
since have 50cm pieces of lumber, divide 243.84cm by 50cm
243.84/50=4.8768
because it is a decimal, you should round up, since the pieces are only 50cm
so you would need 5 pieces of 50cm lumber

Answer 2

12 in. in a ft TIMES 8 ft EQUALS 96 in.
96 in. TIMES 2.54 cm. EQUALS 243.84 cm.
243.84 cm. DIVIDED BY 50 cm. blocks EQUALS 4.8768
4.8768 ROUNDS UP to 5 blocks
Thes answer is 5

Answer 3

thanks you both

Answer 4

you're welcome