Answer:
((8-2t)x3t)-(3-txt)
Step-by-step explanation:
srry just guessing
So a)
it has 4 faces
first=30
second=30
third=20
fourth=20
b)surface area=120
We could find x by finding the leg of the implied triangle.
We could use Pythagorean’s theorem for this
a^2 + b^2 = c^2
Plug in values
(17)^2 + b^2 = (19)^2
289 + b^2 = 361
b = 6 square root 2
We multiply this by two because there are two of these
This makes it 12 square root 2
Subtract this from 31
This will be 31-12 sqrt 2 or 14.029437...
15.3................................................
1/2 listen this answer is wrong I just answer bc this app told me too answer questions