Your engineering firm is bidding for the contract to construct the tunnel shown here The tunnel is 300 ft long and 50 ft wide at the base The cross section is shaped like one arch of the curve y 25 cos (x 50) Upon completion, the tunnels inside surface (excluding the roadway) will be treated with a waterproof sealer that costs $2 35 per square foot to apply How much will it cost to apply the sealer 25 y 0 y 25 cos (mx 50) 25 NOT TO SCALE 300 ft x (ft)

Question: Your engineering firm is bidding for the contract to construct the tunnel shown here. The tunnel is 300 ft long and 50 ft wide at

Your engineering firm is bidding for the contract to construct the tunnel shown here. The tunnel is 300 ft long and 50 ft wide at the base. The cross-section is shaped like one arch of the curve y = 25 cos (πx/50). Upon completion, the tunnel’s inside surface (excluding the roadway) will be treated with a waterproof sealer that costs $2.35 per square foot to apply. How much will it cost to apply the sealer? -25 y 0 y = 25 cos (mx/50) 25 NOT TO SCALE

-25 y 0 y = 25 cos (mx/50) 25 NOT TO SCALE 300 ft x (ft)

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