(-5,-3) (5,-4) slope =
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Answer: 2.524 ft
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The equation for the surface area of a sphere is
.
SA = surface area
r = radius
You're told that the surface area, SA = <span>80 square feet. Plug that into the equation and solve for r:
</span>
<span>
</span>
----
The equation for the surface area of a sphere is
SA = surface area
r = radius
You're told that the surface area, SA = <span>80 square feet. Plug that into the equation and solve for r:
</span>
</span>
Answer: 8.3 feet
We know the area of 1 tile is:
(1)
We also know Jack used 103.75 tiles to cover the whole bathroom floor, which is a rectangle.
Remembering (1), we have that:
(2)
Which is also the area of the rectangle from which we only have the value of one of its sides, the width :
(3)
In addition, the area of a rectangle is given by the following equation:
(4)
Where is the length.
Substituting the value of the width written in (3) and the area (2) in equation (4):
(5)
We finally have the value of the length of the bathroom floor: