Mr.dean paints the top of a round picnic table. The diameter of the table iz 6 feet. The paint he usez comes in a can that covers 18 square feet of surface. How many cans of paint does mr.dean need to purchase to paint one coast on the top of the table?

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Well, that's quite a colorful question! Let's calculate the area of the round picnic table first. The diameter is 6 feet, so the radius is half that, which is 3 feet. To find the area of a circle, we use the formula A = πr². Plugging in the value for the radius, we get A = π(3)² = 9π square feet.

Now, we have to figure out how many cans of paint are needed to cover this area. One can covers 18 square feet. So, if we divide the area of the table by the coverage of one can, we get 9π / 18 = π/2 cans.

Therefore, Mr. Dean would need to purchase approximately π/2 cans of paint to paint one coast on the top of the table. But since we can't buy a fraction of a can, Mr. Dean might have to buy at least 1 can of paint. I hope Mr. Dean doesn't get too ego-brushed during his painting sessions!

To find out how many cans of paint Mr. Dean needs to purchase to paint one coat on the top of the table, we need to calculate the surface area of the table top and then determine how many cans are required to cover that area.

First, let's find the area of the table top. The table is round, so we can find the area using the formula for the area of a circle: A = πr^2, where A is the area and r is the radius.

Given that the diameter of the table is 6 feet, the radius (r) is half of the diameter, which is 6/2 = 3 feet.

Now we can calculate the area:
A = π * (3 feet)^2
A = π * 9
A ≈ 28.27 square feet

Next, we determine how many cans are required to cover this area. Each can covers 18 square feet of surface, so we divide the area of the table top by the coverage per can to get the number of cans needed:
Number of cans = Area of the table top / Coverage per can
Number of cans = 28.27 square feet / 18 square feet

Dividing these two values gives us the number of cans needed to cover one coat on the top of the table:
Number of cans ≈ 1.57 cans

Since we cannot purchase partial cans, we would round up to the nearest whole number. Therefore, Mr. Dean would need to purchase 2 cans of paint to paint one coat on the top of the table.

A = pi * r^2

A = 3.14 * 3^2
A = 3.14 * 9
A = 28.26 square feet

28.26 / 18 = ?

Round up to find the number of cans of paint that are needed.