The top of a gate post is in the shape of a square pyramid. the height of the pyramid is 5 inches and each side of the base is 7.4 inches. find the volume of wood needed to make the top of the gate post. round to the nearest tenth.

91.3 in³

Step-by-step explanation:

The formula for the volume of a pyramid is:

V = where B=area of the base and h=height of the pyramid

Given the dimensions in the problem and that the pyramid has a square base, we can first calculate the area of the base:

A = 7.4 x 7.4 = 54.76 in²

Multiply the area of the base x height of the pyramid:  (54.76 x 5) = 273.8

Divide by 3 (multiply by ): 273.8/3 ≈ 91.3 in³

3

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.