Volume = pi x radius^2 x height
400=3.14 x 4^2xheight
400=50.24h
400/50.24= h
7.96 = height
Hello!
2.
To find the area of a kite we use the equation

p is the line in the kite that goes from top to bottom
q is the line in the kite that goes from left to right
put in the values

Multiply

Divide
55
The answer is 55
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4.
I believe the answer is 770 yds squared
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6.
The ratio is 12:7
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8.
I do not know how to do 8 sorry
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10.
I can't see the whole picture put I will do my best
Since the angle inside the circle is 50° the side is also 50°
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12.
I do not know how to do 12 sorry
Hope this helps!
Answer:
(-8/7 ; 5/7)
Step-by-step explanation:
5t + 1/2s = 3 - - - (1)
3t - 6s = 9 - - - - - (2)
Multiply (1) by 12 and (2) by 1
Add the result to eliminate s
60t + 6s = 36
3t - 6s = 9
____________
63t = 45
t = 45 / 63
t = 5/7
Put t = 5/7 in either (1) or (2) to obtain the value of s
3(5/7) - 6s = 9
15/7 - 6s = 9
-6s = 9 - 15/7
-6s = (63 - 15)/7
-6s = 48/7
s = 48/7 * - 1/6
s = - 8/7
D is the right answers
hope it help... :)
Answer:
Is it 2160?
Step-by-step explanation:
This is permutation
Imagine □□□□□, each □ represents a digit
For the 1st □, there are 6 choices, since "0" cannot be the first digit, or else it is not a 5-digit number
For the 2nd □, there are 6 choices (1 out of the 7 number is already used)
For the 3rd □, there are 5 choices (2 out of 7 numbers are used)
And so on.....
Therefore,
6×6×5×4×3 = 2160