How many square meters of tile are needed to tile the sides and bottom of the swimming pool? How much water does the pool hold?
Can you write down the paper I ha e no space in my cell
What is the name of the solid that this pool is shaped as?
For the surface area: The sides and bottom of the pool are a bunch of rectangles and trapezoids. Find all their areas and add them together.
Areas Rectangle: A = LW, where the length is L, and the width is W. Trapezoid: A = (B + b)h/2, where the bases are B and b, and the height is h.
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Left side is a rectangle, 6 m by 20 m. What is the area of the left side? |dw:1455504607962:dw|
20*6 =120
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Good. Now look at the front and back sides. They have the same shape and area. Each side is a rectangle 1 m by 25 m, and a trapezoid with bases 25 m and 13 m, and a height of 5 m.
What is the area of a rectangle 1 m by 25 m?
25m
25 m^2 Good. Now we have the trapezoid. The bases are 13 m and 25 m. The height is 5 m. Do you know how to find the area of a trapezoid?
yes, A=25+13/2(5) = 95
A=(25+13)/2(5) = 95 Correct. Each trapezoid has area 25 m^2. Let's continue. Look at the bottom of the pool. What is the shape and its area?
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rectangle A= lw 20*13 =260m^2
Great. Now we have two more rectangles on the bottom right and right faces.
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