Answer:1. 16
2. 21
3. 150
4. 156
Step-by-step explanation: for the first 2 you divide the number without the variable and the number with the variable. With the last 2 you multiply the number with and without the variable together.
Answer:
It is 75 Hope this helps
Step-by-step explanation:
First find height using Pythagorean theorem.
.
Then use cone surface area formula and compute the result:
.
Hope this helps.
Answer:
third option
Step-by-step explanation:
The n th term of a geometric sequence is
= a₁ 
where a₁ is the first term and r the common ratio
← is in this form
with a₁ =
and r = 2
There is nothing there to work with