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g100num [7]
3 years ago
12

Please answer this question now

Mathematics
1 answer:
3241004551 [841]3 years ago
3 0

Answer:

Surface area of the cone = 1306.24 square centimeters

Step-by-step explanation:

Surface area of a cone is determined from the formula,

Surface area of cone = πr(r + l)

where 'r' = radius of the circular base of the cone

l = lateral height of the cone

And π = 3.14

Surface area of the cone with 'r' = 13 cm and 'l' = 19 cm

Surface area = 3.14(13)(13 + 19)

                     = 3.14(13)(32)

                     = 1306.24 square centimeters

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Scientists discover two planets orbiting a distant star. The average distance from the star to Planet A is 4 AU, and it takes 43
Kitty [74]

Answer:

Option C - 9 AU

Step-by-step explanation:

To find : What is the average distance from Planet B to the star?

Solution :

According to kepler's law,

The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.

i.e. P^2\propto S^3

We have given,

The average distance from the star to Planet A is S_1=4 AU.

It takes 432 Earth days for Planet A to orbit the star i.e. P_1=432

It takes 1,460 days for Planet B to complete an orbit i.e.  P_2=1460

Substitute the values in (\frac{P_1}{P_2})^2=(\frac{S_1}{S_2})^3

(\frac{432}{1460})^2=(\frac{4}{S_2})^3

0.0875=(\frac{4}{S_2})^3

Taking root cube both side,

\sqrt[3]{0.0875}=\frac{4}{S_2}

0.444=\frac{4}{S_2}

S_2=\frac{4}{0.444}

S_2=9.00

The average distance from Planet B to the star is 9 AU.

Therefore, Option C is correct.

5 0
3 years ago
Look at the screenshot please
Karolina [17]
SA = s2<span>  +  2 × s × </span>l<span> 
l=7 s=9
SA=81+2x9x7
SA=81+126
SA=207 cm^2
ANswer is C</span>
8 0
3 years ago
Which is the graph of 3x-4y = 6
Inessa [10]
Reformat the equation to be in terms of y.
4y= 3x-6
y=3/4x -6/4
The y intercept when x=0 is -6/4
The x intercept when y=0 is 2
Simply draw the graph using these two points
6 0
4 years ago
Read 2 more answers
Plz help me solve and explain how you got that answer
Zina [86]
Centi means 100, so a centimeter 1/100 of a meter. Therefore, you must divide 200 by 100 to get the meters. The answer is 2.
8 0
3 years ago
Read 2 more answers
The price of a pair of earrings is $22 but Priya buys them on sale for $13.20.
BARSIC [14]

Answer:

  • $8.80
  • 40%

Step-by-step explanation:

The amount of the discount is the difference between the original price and the discounted price. That was ...

  $22.00 -13.20 = $8.80

The percentage of the discount is the ratio of the amount of the discount to the original price. That was ...

  8.80/22.00 × 100% = 40%

The price was discounted $8.80. That was a 40% discount.

6 0
3 years ago
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