He will have more than enough because he only needs to cover 84.1425 square feet.
As, v=√2as
Squaring both sides,
v²=2as
∴ s= v²/2a
Add $20 and $60 and your answer which is $80 dividdd that by 1.
Well, the interseciton of 2 planes would be a line, so it would be like line AB when it goes through the 2 points A and B
Answer:
there is no options but anything that doesnt equal 1/2 esstentially because 4/8 is the same as 1/2