Ann wants to know the length of a tunnel built through a mountain. To do so, she makes the measurements shown in the figure below. Use these measurements to find the length of the tunnel. 209 m 151 m 82° Carry your intermediate computations to at least four decimal places. Round your answer to the nearest tenth of a meter. meters X

The length, L, of the standard 82° included angle drill can be calculated using the formula L=0.575 , where Ø represents the diameter of the drill. Determine the length of a drill point with a diameter of 12.5 mm. Round your answer to 1 decimal place.

The length, L, of the point on any standard 82° included angle drill can be calculated using the formula L = 0.575 , where represents the diameter of the drill. Determine the lengths of the following drill points with the given diameters. Round to 3 decimal places for inches and 1 decimal place for millimeters. a. 12 b. 14 c. 38 d. 10 mm e. 25 mm f. 45 mm

Find the intensity of light at a depth of 12 meter if I0=14 and k=0.7. Round to two decimals.