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alexandr402 [8]
3 years ago
8

The equation of a circle is given as x2+ax+y2+by=c where a, b, and c are constants. The radius of the circle is given by the exp

ression
(a2)2+(b2)2+c

a+b+c

(a2)2+(b2)2

c√
Mathematics
2 answers:
Lady bird [3.3K]3 years ago
7 0
B because if the circle has a radius of x2 the 1/2 of that would be a+c bringing in c to become abc or a+b+c
sergeinik [125]3 years ago
7 0

Answering actually A

Step-by-step explanation:

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4 x 3.20 = $12.80

$12.80 would be the total cost before tax.

~

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3 years ago
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Find
Sedaia [141]

Answer:

The amount of steel used = 94.38 m^{2}

Step-by-step explanation:

Height of the tank = 4.5 m.

Diameter of the tank = 4.2 m.

But,

radius = \frac{diameter}{2}

           = \frac{4.2}{2}

radius  = 2.1 m

Total surface area of a cylinder = 2\pirh + 2\pir^{2}

                                      = 2\pir(r + h)

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Thus, 94.38 m^{2} of steel was used in making the tank.

4 0
3 years ago
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