Question

Im a bit confused can anyone help?

Answer 1

For the 1st i got 90 which isnt a an answer then for the 2nd one i got 34.63 which isnt a answer

Answer 2

@yaya090600

Answer 3

So the pyramid we have

\[\large SA = \frac{1}{2} \times \text{Perimeter of the base} \times \text{Slant Height}\]

Since we know sides of the base are all 5 we have 20 for the perimeter...and we know the slant height is 6 sooo

\[\large SA = \frac{1}{2} \times 20 \times 6 = 60\]

Answer 4

ooohh okay

Answer 5

do you do the same for the 2nd one or?

Answer 6

Not really...first realize that a pyramid is basically 4 triangles leaning against each other right? my terrible drawing there XD

Answer 7

right

Answer 8

Now if we want the slant height *have to draw this a little slanted because I started slanted



It looks like we just have a right triangle with height 4 and base 1.5 right? We just need to find the hypotenuse

Answer 9

ok

Answer 10

And I'm sure you know how to do that :)

Answer 11

yeah

Answer 12

sorry i just saw this lol

Answer 13

no your fine lol

Answer 14

do you still need help?

Answer 15

yeah on the 2nd one i got 34.63

Answer 16

do you know how to do the Pythagorean theorem?

Answer 17

yeah i do

Answer 18

ok since the line is in the middle of the pyramid you wont square the 3

Answer 19

so 4^2 + 3 = x^2

Answer 20

so 19?

Answer 21

19=x^2

Answer 22

so you square root each side

Answer 23

ok

Answer 24

\[\sqrt{19} = 4.359\]

Answer 25

so do we leave it at 5 since it wants us to round?

Answer 26

it rounds to 4.4 which is not one of your options

Answer 27

so just 4.3

Answer 28

thats what i would put lol

Answer 29

Thanks again!

Answer 30

my pleasure

Answer 31

Im sorry @yaya090600 can you help me with thie fist one I got 60 but its wrong

Answer 32

im just confused what went wrong

Answer 33

SA = 1/2*20*6=60 was wrong

Answer 34

you can google surface area of a pyramid calculator and put in the length width and height

Answer 35

i got 90

Answer 36

its not an answer

Answer 37

but you need to find the height first, and you can use the Pythagorean theorem for that

Answer 38

7.81

Answer 39

\[x ^{2} + 5 = 6^{2}\]

Answer 40

so the height would be \[\sqrt{31}\]

Answer 41

so would it be B

Answer 42

no

Answer 43

your length and width are both 5

Answer 44

i got 86

Answer 45

oh its 85

Answer 46

oh i didnt round, its 85

Answer 47

thank you

Answer 48

no prob