# math

posted by .

Lena is tiling a square ﬂoor with each
side 3 metres long. Tiles cost \$45 per
square metre.
Which calculation gives the total cost of
tiling the ﬂoor (in dollars)?

• math -

First calculate area of square room
side = 3m
Area = side*side m²

From unit price = \$45/m², calculate
Total Cost = unit price * area

• math -

30

## Similar Questions

1. ### physics!

A student is about to do a push-up. Her center of gravity lies directly above P on the ﬂoor, which is 1.1 m from her feet and 0.4 m from her hands. If her mass is 55 kg, what is the force exerted by the ﬂoor on her hands?
2. ### Physics

Once a 15 kg crate is in motion on a horizontal ﬂoor, a horizontal force of 51 N keeps the crate moving with a constant velocity. The acceleration of gravity is 9.81 m/s What is µk, the coeﬃcient of kinetic friction, …
3. ### physics

Once a 15 kg crate is in motion on a horizontal ﬂoor, a horizontal force of 56 N keeps the crate moving with a constant velocity. The acceleration of gravity is 9.81 m/s 2. What is µk, the coeﬃcient of kinetic friction, …
4. ### physics

Tom the cat is chasing Jerry the mouse across a table surface 1.8 m oﬀ the ﬂoor. Jerry steps out of the way at the last second, and Tom slides oﬀ the edge of the table at a speed of 7.6 m/s. Where will Tom strike …
5. ### physics

Once a 28 kg crate is in motion on a horizontal ﬂoor, a horizontal force of 51 N keeps the crate moving with a constant velocity. The acceleration of gravity is 9.81 m/s. What is µk, the coeﬃcient of kinetic friction, …
6. ### Physics

A student is about to do a push-up. Her center of gravity lies directly above P on the ﬂoor, which is 1.2 m from her feet and 0.6 m from her hands.If her mass is 56 kg, what is the force exerted by the ﬂoor on her hands?
7. ### Phyisics

Once a 26 kg crate is in motion on a horizontal ﬂoor, a horizontal force of 64 N keeps the crate moving with a constant velocity. The acceleration of gravity is 9.81 m/s 2 . What is µk, the coeﬃcient of kinetic friction, …
8. ### Physics

A string is wound around a solid cylindrical spool of mass 9.7 kg and radius 0.1 m and is tied to the ceiling. If the spool is released from rest and rolls on the string, and the distance to the ﬂoor is 6.14 m, how long will …
9. ### Physics

Tom the cat is chasing Jerry the mouse across a table surface 2.4 m oﬀ the ﬂoor. Jerry steps out of the way at the last second, and Tom slides oﬀ the edge of the table at a speed of 4.8 m/s. Where will Tom strike …
10. ### physics

Starting from rest, a(n)9 kg block slides 9.7 m down a frictionless ramp (inclined at 30◦ from the ﬂoor) to the bottom. The block then slides an additional 23.5 m along the ﬂoor before coming to stop. The acceleration …

More Similar Questions

Post a New Question