PLEASE HELP ITS DUE BY MIDNIGHT

Mathematics

1 answer:

muminat4 years ago

6 0

Answer:

Step-by-step explanation:

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A local hockey rink is covered by a dome in the shape of a hemi-sphere (half sphere). if the floor of the arena has a diameter o

8_murik_8 [283]

The surface area of hemisphere is given by:

$Surface Area = 2 \pi r^{2}$

Where r is radius of hemisphere.

We are given diameter = 250 ft.

We know that radius = half of diameter.

Radius of dome = 1/2 (250) = 125 ft.

Now let us plug the value of radius in the formula,

$Surface Area = 2 (3.14) (125)^{2}$

Surface Area of dome = 98125 square foot.

5 0

3 years ago

How do we round 8.465 nearest hundredths

kiruha [24]

The second number after the decimal is the hundredths place. To round to that place, you look at the number after it. In this case 6 is the hundredths place and 5 is the number after it. If the number after it is 5 or higher, the hundredths place number increases by 1, if it is less than 5 the hundredths place number doesn't change. So the answer is 8.47.

8 0

4 years ago

Read 2 more answers

Ann, Chang, and Kareem sent a total of

Gnoma [55]

It is given in the question that

Ann, Chang, and Kareem sent a total of 89 text messages over their cell phones during the weekend. Ann sent 9 fewer messages than Chang. Kareem sent 3 times as many messages as Ann.

Let number of messages Chang sent be x. And Ann sent 9 fewer than Chang, so Ann sent (x-9) messages. And Kareem sent 3 times as many messages as Ann, so Kareem sent 3(x-9) messages.

And the total messages are 89. That is

$x+x-9+3(x-9)=89$