Recent content by dmonlama

i got the 40000/pi - pi(r)^2 by getting the overall area and minus it by the semicircular circles that cap the rectangular part. that's the answer for a.

Homework Statement An athletic field is to be built in the sahpe of a rectangle x units long capped by semicircular regions of radius r at the two ends. The field is to be bounded by a 400-m racetrack. a. Express the area of the rectangular portion of the field as a funcion of x alone or r...

Homework Statement a. Show that if the position x of a moving point is given by a quadradic function of t,x = At^2 + Bt + C, then the average velocity over any time iunterval [t1,t2] is equal to the instantaneous velocity at the midpoint of the time interval. b. What is the geometric...

An Osculating Circle! HELPPP plZZ urgent Homework Statement find the values of h,k and a that make the circle (x-h)^2+(y-k)^2=a^2 tangent to the parabola y=x^2+1 at the point (1,2) annd that also make the second derivatives d^2y/dx^2 have the same value on both courves.