john was building a new fence and he wnats it to stand 8 1/2feet above the ground level. to make sure it is secure he must place it 2 3/4 feet into the ground. howlong of a apost should john buy?
a)10 1/2 feet
b)10 3/4 feet
c)11 1/2 feet
d)11 1/4 feet
e)11 feet
i choose d am i correct?
Yes. d) 11 1/4 feet is correct.
To find the length of the post John should buy, we need to add the height above the ground level (8 1/2 feet) to the depth it should be placed into the ground (2 3/4 feet).
8 1/2 + 2 3/4 = (17/2) + (11/4) = (34/4) + (11/4) = 45/4 = 11 1/4 feet
So the correct answer is d) 11 1/4 feet. Well done!