Diagram below shows the straight line 0Q and the straight line y = k intersecting the
curve x =4y - y at point Q.
yk
To
It is given that the area of the coloured
9
region is unit
2
(a) Find the value of k.
(b) The region enclosed by the curve and y
axis is revolved through 360° about y-
axis. Find the volume of revolution, in
terms of it.

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

What is an alternate exterior angle

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?