Answer:
i. Curved surface area = 2310 
ii. Total surface area = 3696 
iii. volume = 12936 
Step-by-step explanation:
Perimeter of the circular base = circumference of the circle = 132 cm
circumference of a circle = 2
r
132 = 2
r
r = 
= 
r = 66 x 
= 3 x 7
= 21
radius = 21 cm
vertical height, h = 28 cm
Thus applying the Pythagoras theorem,
=
+ 
=
+ 
= 784 + 441
= 1225
l = 
l = 35 cm
The slant height is 35 cm.
i. Curved surface area =
rl
=
x 21 x 35
= 22 x 3 x 35
= 2310
curved surface area of the cone is 2310
.
ii. Total surface area =
+
rl
=
r(r + l)
=
x 21 (21 + 35)
= 22 x 3 x 56
= 3696
The total surface area of the cone is 3696
.
iii. volume of a cone = 
h
=
x
x
x 28
= 12936
The volume of the cone is 12936 
Answer:92
Step-by-step explanation:
9 because that is the answer trust me
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The number of dots tells us how many times we need to add the actual number underneath the dots. So you need to use both.
<h3>
Which number should you use for the mean?</h3>
Let's suppose we have the next set:
{2, 2, 2, 4, 5, 5, 6}
If you graphed it in a dot plot, then you will have:
- 3 dots above the number 2.
- 1 dot above the number 4.
- 2 dots above the number 5.
- 1 dot above the number 6.
A total of 7 dots.
To find the mean, we just compute:

So the number of dots tells us how many times we need to add the actual number underneath the dots. In conclusion, to find the mean you need to use both, the number of dots and the number underneath.
If you want to learn more about dot plots:
brainly.com/question/15853311
#SPJ1
Equation of a line that is perpendicular to given line is
.
Equation of a line that is parallel to given line is
.
Solution:
Given line
.
Slope of this line,
= 



Slope of perpendicular line, 
Passes through the point (–7, 5). Here
.
Point-slope formula:



Subtract 7 from both sides, we get

Equation of a line that is perpendicular to given line is
.
To find the parallel line:
Slopes of parallel lines are equal.


Passes through the point (–7, 5). Here
.
Point-slope formula:


Subtract 7 from both sides,

Equation of a line that is parallel to given line is
.