Marco made of rectangular prism using 1/2 m cubes the rectangular prism has a volume of 5 m³ how many cubes did Marco use

1 answer:

Nookie1986 [14]3 years ago

8 0

Ok so
1 find volume of 1 cube
2. find total volume of rectangular prism

1/2 m cubes
volume=side^3
side=1/2m (I guess since that was what was given)
v=1/2^3=1/8

so
volume of 1 cube times number of cubes=total volume
1/8m^3 times number of cubes=5m^3
multiply both siides by 8/1 m^3 to clea fraction (since 8/1 times 1/8=8/8=1)
number of cubes=40

needs 40 cubes

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zubka84 [21]

Answer:

Step-by-step explanation:

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3 years ago

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What is the area of this polygon?

Tatiana [17]

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A polygon is given to us and we are interested in finding out the area of the polygon .

Here we can see that the polygon is made up of a rectangle and a triangle .

We can separately find out their areas and then add them up to find out the area of the polygon.

So that ,

$\sf\longrightarrow Area = ar(\triangle)+ ar(\blacksquare) \\$

We know that the area of rectangle is length × breadth and that of triangle is 1/2 × base × height . So ,

$\sf\longrightarrow Area = \dfrac{1}{2}(base)(height) + (length)(breadth) \\$

Here height of triangle can be calculated by subtracting the lengths 18cm and 14cm and its base can be calculated by subtracting CD from BD ( see figure in attachment.)

$\sf\longrightarrow Area = \dfrac{1}{2}(4cm)(11cm)+(21cm)(14cm)\\$