Answer:
5
Step-by-step explanation:
5/30 = 1/6
Answer:
3 m : 4 cm, 3 m/4 cm, 3 m to 4 cm
Step-by-step explanation:
The actual playground will have an area of 72 m², and have one side be double the other, because the scale drawing does so too.
We can make a system of equations: l * w = 72, l = 2w
Substitute: 2w * w = 72
Simplify: 2 * w² = 72
Divide: w² = 36
Square root: <em>w = 6 m</em> (no negatives due to distances always > 0)
Substitute: l = 2 * 6 m
Simplify: <em>l = 12 m</em>
This means that the relations of one side is <em>6 m : 8 cm</em>. That can be simplified to 3 m : 4 cm.
Answer: Keep the equal signs lined up, Even if you can do it your head, write it all out. If less than 4 inches of room, get out a new sheet of paper to do it on.
Step-by-step explanation:
Hopes this helps:
Answer: x = 6
Answer:
3) 161
Step-by-step explanation:
Indeed this is pretty easy :D
What we need to find is the surface area of the rectangular prism excluding the area of the hole. First, let's find out the width of the box, we can do this by using the area, the length, and the height, and we can write:

(Formula to find the volume of a rectangular prism)

Now that we have the width, can find the area of the top part of the prism:

The area of the top part of the prism is 20, and the circle has 1/4 of the area of that:

So the area of the circle is 5. Now we just need to find the surface area of the rectangular prism and subtract that result with the area of the circle:

Subtract these two results...:

And we are done!