## anonymous one year ago 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?

1. anonymous

2. anonymous

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

3. taramgrant0543664

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

4. anonymous

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

5. taramgrant0543664

Which answer do you think it is @11.seventeen

6. anonymous

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

7. anonymous

wait lol it is still possible to use my formula.

8. anonymous

282?

9. anonymous

well if you round yes. it is around 281.95

10. taramgrant0543664