Question

What is the surface area of the regular pyramid pictured below?

Answer 1

http://media.apexlearning.com/Images/200703/27/ec4d540e-de64-445e-a69c-7a2c6c264f63.gif

Answer 2

thank u for helping me 3mar

Answer 3

You are welcome, brother!

Answer 4

With my pleasure!

Answer 5

ok so i dont really know the answer to this one lol :P

Answer 6

The surface area of the regular pyramid simply means the sum of the areas of all its faces.

Answer 7

so 48?

Answer 8

or wait... no

Answer 9

The surface area of any volume simply means the sum of the areas of all its faces.

Answer 10

um 1 sec brb

Answer 11

Take your time.

Answer 12

where are you?

Answer 13

okay i am back srry had to feed the dogs

Answer 14

i leave for school in another hour an a half so i need to get these problems done fast

Answer 15

so what do i do?

Answer 16

hallo?

Answer 17

is it 48?

Answer 18

???

Answer 19

48 is the area of one triangular "face"
but if you look at the picture, it has 4 of those triangular faces (all are the same size)
plus, the "bottom" is a square, and you need the area of the bottom

in other words, the surface area of the figure is the area of 4 triangles plus the bottom square.

Answer 20

but i though 12 was the area of one triangular face?

Answer 21

area of a triangle is base * height / 2
in this problem 8 * 12 /2 = 8*6 = 48
that is one of the triangles.

Answer 22

oh okay

Answer 23

so what do i do next?

Answer 24

add up the areas of the 4 triangles (or multiply 4*48)
then add in the area of the bottom (it is a square with sides = 8)

Answer 25

4*48=192
192+8=200

Answer 26

the area of a square is not just 8
it is base*height (but both are the same number, 8 in this case)

Answer 27

8*8=64
192+64=256

Answer 28

yes

Answer 29

thats the answer?

Answer 30

Nice performance, YourBoyDusty!

Answer 31

thanks!

Answer 32

Yes, that is the answer!