Question

Find the surface area of the figure below.
http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/b/assessments/SA-SurfaceAreaandVolumeofPyramidsandConesQuiz/Geometry_9.2_Quiz_FINAL_4q.jpg

A. 200 in2
B. 42.5 in2
C. 85 in2
D. 88 in2

Answer 1

First find the surface area of the 4 triangles

Answer 2

Then add the surface area of the square on the bottom

Answer 3

The surface are of one triangle is 1/2 b* h , which is 1/2*4*9

Answer 4

Surface area of the square is 4*4

Answer 5

Ok... so I got A as my answer

Answer 6

4 Triangles = 4* 1/2*4*9
1 square = 4*4
add them all together
4* 1/2*4*9 + 4*4 = Answer

Answer 7

Ok its 200 right?

Answer 8

nope

Answer 9

woah ok i got 304???

Answer 10

xD

Answer 11

What is the surface area of just one of those triangles?

Answer 12

36

Answer 13

try again

Answer 14

Area of Triangle = 1/2 * b * h

Answer 15

18

Answer 16

@dan815 am i right?

Answer 17

sorry i was doing something and yes
18
now we have 4 triangles so
4*18 = 72
and we have the square on the bottom which is 4*4 = 16
72+16 = 88