Asked by Tessa

Find the surface area of a square pyramid with a length of 5 cm and slant height of 8 cm.
A. 80 cm
B. 105 cm
C. 200 cm
D. 145 cm
I've tried different variations and formulas but they don't match my answer choices. Please help me solve this!
Answered by Damon
area of one side = (1/2) (5)(8) = 20 cm^2
area of 4 sides = 80 cm^2
area of base = 25
base + sides = 80 + 25 = 105 cm^2
Answered by Reiny
You didn't say to include the area of the square base,
so let's just find the sum of the surface areas of the 4 equal triangle
We will need the height of one such triangle, let it be h cm
h^2 + (5/2)^2 = 8^2
h^2 + 25/4 = 64
h^2 = 231/4
h = √231 /2
total area = 4(1/2)(5)(√231/2) = 5√231 = appr 76 cm^2

I doesn't show it there, so perhaps they added the area of the base which should be
a total of 76 + 25 or 101 cm^2
I don't see that either, so ?????
Answered by Reiny
Go with Damon
I thought the slant height would be the edge of the pyramid.

Just looking at the choices.
One answer includes the area of the base,
another doesn't include it, but the wording does not say which way.
Poorly designed question.
Answered by Damon
Yes, it does not say if we should include the 25 cm^2 buried in the sand
Answered by aNsWEr HeRe
1. C
2. A
3. C
4. A
5. C
6. B
Just took it, yknow even though it’s a practice it still counts
Answered by I’m js chillin 😎
It’s B
Answered by random person
aNsWEr HeRe thanks except for question 5 its B all the other answers aNsWEr HeRe gave are correct
Answered by 𝒳𝓍𝒜𝓌𝑒𝓈𝑜𝓂𝑒𝒢𝓊𝓎𝓍𝒳
NUMBER FIVE IS B
1C
2A
3C
4A
5B
6B
Answered by Audrey Renee
1.C
2.A
3.C
4.A
5.B
6.B
Answered by fsegezg
ewfzefw
Answered by fsegezg
drhd
Answered by eva
answer here is correct except for #5
Answered by aubrey
g8ujdtcrhey
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