Answer:
4th option (sqrt(10))/2
Step-by-step explanation:

It's 78.38
You have to square root
Hi. The statement you gave is somewhat true, but not always. I disprove this and there are tons of websites that can help you with more in depth explanation. Have a good day.
Answer:
A. 39,000.
Step-by-step explanation:
Volume of the lower prism = 30^3= 27,000
Volume of the pyramid = 1/3 area of the base * height
= 1/3 * 900 * 40
= 1200
Volume of the whole solid = 27000 + 12000
= 39,000,
1 ║ 1 2 -3 2
1 3 0
--------------------------------------------------------------------
1 3 0 
⇒ The Remainder is 2