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LUCKY_DIMON [66]
1 year ago
12

8th grade geometry, will give brainliest to the person who lists out the steps to solve the problem. Also if someone could expla

in what it means to dilate something by a scale factor of something, i’d really appreciate it :)

Mathematics
2 answers:
monitta1 year ago
6 0
It means to make bigger
vivado [14]1 year ago
5 0

Answer:

Dilating something by scale factor is enlarging it by a number, making it for example, 2 or 3 times bigger than it is.

Step-by-step explanation:

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Answer:

mean=sum of data/no of data

=12/3

=4

Step-by-step explanation:

therefore mean=4

4 0
3 years ago
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Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to
Anettt [7]

Answer:

correct option is 2187

Total surface area is  2,185.44  square inches.

lateral surface area is  640.56 square inches

Step-by-step explanation:

Given

radius of cylinder = 12 inches

height of cylinder = 17 inches

we will us value of pi as 3.14

surface area for cylinder consist of two part

1. lateral surface area which is gven by 2\pi rl

where r is radius of cylinder and l is height of cylinder

Thus, lateral surface area for given cylinder is

2\pi rl\\ =>2* 3.14*12*17\\=> 1281.12

Thus,  lateral surface area for given cylinder is  1281.12 square inches.

_________________________________

second part of surface area is area of two base (upper and lower) of cylinder.

area of base is given by area of circle \pi r^2

area \ of  \base = \pi r^2 = 3.14*12^2\\=>area \ of  \base =  3.14*144 = 452.16

This, area of base is for one base of cylinder

since there are 2 base

area of both base will be = 2* area of one base

                                      = 2*452.16 = 904.32.

Thus, area of base is 904.32 sq. in.

_______________________________________

Total surface area of cylinder = area of two base+ lateral surface area of cylinder = 1281.12 square inches + 904.32 square inches

                  = 2,185.44  square inches.

Thus, total surface area is  2,185.44  square inches.

lateral surface area is  640.56 square inches

but option which is closest to calculated value is  2187.

Thus, correct option is 2187

___________________________________________

Note: this problem can be directly solved using formula

total surface area for cylinder = 2\pi r^2 + 2\pi rl

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2 years ago
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zysi [14]
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3 years ago
Write the ratio 69:75 as a fraction, decimal,and a percent.
LekaFEV [45]
As a fraction, 69:75 would become 96/75
As a decimal 69:75 would become 0.92
As a percentage 69:75 would become 92%
Hope this helps :) 
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3 years ago
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A doll factory needed to produce an order of dolls for a shop. The factory
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24 / 1.6 = 15

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