D
Because to cancel out division you use multiplication
Appropriate units to measure the width of a house would be meters in metric and feet in English
Answer:
A)finding the least commen denominator
First, we need to calculate the surface area of the prism, to know how much space we need to cover. An important fact to keep in mind is that with a cuboid, there are three pairs of identical faces. This means that there are:
Two faces with a surface area of 2×1=2ft²
Two faces with a surface area of 3×2=6ft²
and two faces with a surface area of 1×3=3ft²
So, the total surface area of the shape is:
2(2)+2(6)=2(3)
=4+12+6
=22ft²
Knowing that each tile costs 1ft², then Marita will need 22÷1=22 tiles. Therefore, the total cost of tiling the whole prism is 22×0.45= $9.90
Change either of them to the same unit to compare
For example:
which is larger 10 cm or 3 m?
These are 2 different lengths measured in two different size units.
m ⇒ cm
1 m ⇒ 100 cm
3 m ⇒ 300 cm
So, 300 cm is greater than 10 cm