Arectangular prism has a base that is 5 cm by 7 cm and a height of 12 cm. if all dimensions are doubled, what happens to the volume?
a. when the dimensions are doubled, the volume is twice the original volume. b. when the dimensions are doubled, the volume is three times the original volume. c. when the dimensions are doubled, the volume is four times the original volume. d. when the dimensions are doubled, the volume is eight times the original volume.

D. When the dimensions are doubled, the volume is eight times the original volume.

Step-by-step explanation:

We know that the volume of a rectangular prism is given by:

Given that base = 5 cm, width = 7 cm and height = 12 cm, we can find its volume.

If the dimensions double then:

Finding the ratio between these two volumes:

Therefore, the correct answer option is D. When the dimensions are doubled, the volume is eight times the original volume.

i am unable to solve this problem

step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.