Mathematics: What is the surface area of the cylinder? the diameter is 18ft and the height is 12ft. 540π ft^2 378π ft^2 216π ft^2 594π ft^2

What is the surface area of the cylinder? the diameter

Ответ:

jalenevoyles

02.01.2022

SAcylinder=sides+top and bottom
top=circumference times height
top and bottom=2 itmes circle

d=18
d/2=18/2=9=r
top and bottom=2pir^2=2pi9^2=2pi81=162pi

sides
c=2pir=18pi
height=12
sidearea=18*12*pi=216pi

add
162pi+216pi=378pi ft^2

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Ответ:

eshal43

02.01.2022

Mathematics

Surface area of a cylinder = 2πr^2 + 2πrh = 2π x (18/2)^2 + 2π x (18/2) x 12 = 162π + 216π = 378π ft^2

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Ответ:

5001Je

09.11.2021

Mathematics

1/4 of 825
825 multiplied by .25
= 206.25

825 - 206.25
= 618.75

1/5 of 618.75
618.75 x .20
= 123.75

618.75 - 123.75 = 495

He paid 495 dollars for the tablet.

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What is the surface area of the cylinder? the diameter is 18ft and the height is 12ft.
540π ft^2
378π ft^2
216π ft^2
594π ft^2

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