Question

6.) Find the surface area of the regular pyramid shown to the nearest whole number. The figure is not drawn to scale. http://assets.openstudy.com/updates/attachments/55bff878e4b03325500374c7-lollygirl217-1438647128464-as.jpg

my answer: 1,125 m^2. is that correct?

7.) What is the surface area of a conical grain storage tank that has a height of 37 meters and a diameter of 16 metes? Round the answer to the nearest square meter.

my answer: 1152 square meters.

Answer 1

is that correct?

Answer 2

@triciaal

Answer 3

@Zale101 @Jhannybean

Answer 4

Hello jhanny can you stay, many of you come and then leave...

Answer 5

The surface area of a hexagonal pyramid is defined by this funky formula \[A= \frac{3\sqrt{3}}{2}a^2+3a\sqrt{h^2+\frac{3a^2}{4}}\]

Answer 6

We can begin solving this by using the given information to find the height \(h\) of our hexagonal pyramid

Answer 7

Using the pythagorean theorem for right triangles,... \[h=\sqrt{12^2-(7.5\sqrt{3})^2} =~?\]

Answer 8

@Lollygirl217 ?

Answer 9

Sorry, was I wrong? @Jhannybean

Answer 10

@Zale101 am i wrong?

Answer 11

Im looking for you to work out the problem with me and you yourself will see whether your answer is right or wrong :P

Answer 12

I just need to know, yes or no. I dont really have much time.

Answer 13

i literally only have a day left until I have to turn in a whole load of work so >.<

Answer 14

But now that you have the information to solve for h, we can find our "\(a\)"