A square pyramid has side lengths of 10 units and a height of 7.6 units. The slant height of each lateral face is 9.1 units. What is the surface area of the pyramid to the nearest unit?

Question

anonymous · Answer

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anonymous · Answer

. 282 units^2 

b. 182 units^2 

c. 82 units^2 

d. 382 units^2

taramgrant0543664 · Answer

To do this you find the area of the triangles using A=SL/2
So A=(10)(9.1)/2=?
The area of the square is A=(10)(10)=?
When you add the surface area together you need to take into account there are 4 of the sides

anonymous · Answer

The formula for square pyramid

$$SA = a^2 +2a \sqrt{\frac{ a^2 }{ 4 } + h^2}$$

Where a is base edge and h is height

taramgrant0543664 · Answer

Which answer do you think it is @11.seventeen

anonymous · Answer

Ah i see, it only gives slant hieight and etc. Okay, so use @taramgrant0543664 's formula

anonymous · Answer

wait lol it is still possible to use my formula.

anonymous · Answer

282?

anonymous · Answer

well if you round yes.
it is around 281.95

taramgrant0543664 · Answer

Yes 282 would be your answer!

shadowlegendx · Answer

I thought the answer was two :(