What is the surface area of a cone that has a radius of 8 feet and a slant height of 12 feet? (use 3.14 for π.)

301.44 ft 2
502.4 ft 2
200.96 ft 2
803.84 ft 2

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)