To find the interior angle of any regular polygon you can use the formula

where n is the number of sides
So,

The measure of an interior angle in a regular octagon is 135
70 is the answer I am pretty sure
1 ton is 2,000 lbs
9 x 2,000 = 18,000
So, 18,000 is equal to 9 tons.
Hope this helps. :)
Answer:
Hi,
Step-by-step explanation:
Answer B : 51
1+4+7+10+13+16=51