A block is measured with a ruler. Emerson is making a block tower with 12 of these identical blocks. how tall will the block tower be? a building block beside a metric ruler. the bottom end of the building block is lined up with 0 centimeters and the top end of the building block is lined up with 3 centimeters
a. 3 centimeters
b. 4 centimeters
c. 12 centimeters
d. 36 centimeters