This one is really confusing me
what is the surface area of the figure?

310 cm2

360 cm2

155 cm2

180 cm2

155

Step-by-step explanation

Divide it into symmetries

Symmetry 1,=10×5=50

Second symmetry =5×4=20

Third =5×4=20

Forth =5×4=20

Firth =5×4=20

Sixth =5×5=25

Total =50+20+20+20+20+25=155

155cm

Step-by-step explanation: Multiply all of the sides together or add if you add it would give you the answer of 39 but I think you’d go better along with multiplying.

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3