I believe the answer Is 35. I remember there bing some rule about it. I hope this helps and I’m sorry if I confused you my brain is a little fried.
Answer:
Only A is correct
Step-by-step explanation:
A is shown in the image below.
For B, a rectangle does not have its lenght and height having the same dimension.
For C, such a cross section will give a square with sides of 4 cm each.
12 • 16 = 192
5 • 3.14 = 15.7 15.7/2= 7.85
192 + 7.85 = 199.85
The area of the objective is 199.85
(1,0) or (2,5) or (3,10)
5-0=5, 10-5=5, and 15-10=5