Homework Help: Cross-Sectional Area

Posted by John on Friday, February 22, 2008 at 6:42pm.

The cross-sectional area of a beam cut from a log with radius 1 foot is given by the function A(x) = 4x(sqrt{1 - x^2}), where x represents the length of half the base of the beam. Determine the cross-sectional area of the beam if the length of half the base of the beam is 1/3 of a foot.

Cross-Sectional Area - Damon, Friday, February 22, 2008 at 9:13pm
A = 4 (1/3)sqrt (1 - 1/9)
= (4/3)sqrt (8/9)
= (4/3)sqrt (4 *2/9)
= (4/3)(2/3) sqrt(2)
= (8/9)sqrt(2)

Answer this Question

Related Questions

maths help - Hi MY question is if a cylinder has a volume of 72cm cubed and a ...
physics A - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
Physics - A wire of cross-sectional area 5.00x10^-6 m^2 has a resistance of 1.75...
Physics - A total charge of 16ìC passes through a cross-sectional area of...
Physics - Two wires have the same length and the same resistance but are made up...
physics - Water flows steadily from an open tank into a pipe. The elevation of ...
phys - Water flows steadily from an open tank into a pipe as shown in the figure...

For Further Reading

First Name:
School Subject:
Answer: