Asked by Anonymous
PLEASE HELP!!!
1. A sphere has a radius of 2x+3. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S=4πr^2 for the surface area of a sphere.
2. A carpenter is putting a skylight in a roof. If the roof measures (10x+9) by (7x+7) and the skylight measures (x+5) by (3x+3), what is the area of the remaining roof after the skylight is built?
1. A sphere has a radius of 2x+3. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S=4πr^2 for the surface area of a sphere.
2. A carpenter is putting a skylight in a roof. If the roof measures (10x+9) by (7x+7) and the skylight measures (x+5) by (3x+3), what is the area of the remaining roof after the skylight is built?
Answers
Answered by
MsPi_3.14159265
1. So in your formula replace the r with (2x+3)
that is...
S = 4(PI)(2x+3)(2x +3)
Now use the distributive property to simplify...
2. total area - sky light = area remaining
(10x+9)(7x+7) - (x+5)(3x+3) = remaining area.
Use the distributive property to expand both sets of brackets then collect like terms.
that is...
S = 4(PI)(2x+3)(2x +3)
Now use the distributive property to simplify...
2. total area - sky light = area remaining
(10x+9)(7x+7) - (x+5)(3x+3) = remaining area.
Use the distributive property to expand both sets of brackets then collect like terms.
Answered by
umm
lol umm ok thanks for the answer? bahaha
Answered by
Shinsou is my husband
Thank you MsPi_3.14159265 because im actually glad u didnt give the answer so I can do it on my own :)
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