Astone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60 cm/s. find the rate at which the area within the circle is increasing after each of the following.
(a.) after 1s
(b.) after 4s
(c.) after 6s

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright