Question

Jon has a wing span of 5’6’’ and Jim has a wingspan of 6’. What is the largest diameter of tree they wrap their arms around and still touch their fingers?

Answer 1

Answer:  3 ft 8 in

Step-by-step explanation:

The sum of their wingspan is the circumference of the tree.

Use the formula: C = πd to find the diameter (d) of the tree.

5'6" + 6' = 11'6"     = 11.5 ft

11.5 ft = πd     →   11.5/π = d      →   3.66 ft = d

Next, convert the decimal (feet) into inches

$\dfrac{66}{100} =\dfrac{x}{12}\\\\66(12)=100x\\\\792= 100x\\\\\dfrac{792}{100}=x\\\\7.92 = x$

which means the decimal of .66 ft rounds to 8 in  

⇒ d = 3 feet 8 inches  (3' 8")