14 ) A cylindrical storage tank is being designed . The tank will be filled with propane , which contains 2550 Btu per cubic foot , The tank must had at least 30,900 Btu of energy and must have a height of 2 feet . Under these constraints, what must the radius of the tank be ? Round your answer to the nearest tenth . A . 1. 9 ft B. 2.4 ft C. 2. 8 ft D. 1. 4 ft 15) Nailah is replacing the paper cone of an antique speaker . She measured the existing cone and created the patern for the lateral Surface from a large circle. what is the diameter of the cone? A. 7.5 in Join. B. 20 in C. 15 in D. 10 in 16) A right circular cone has a slant length of 9 inches and a radius of 4 inches . What is the surface area of the Cone to the nearest tenth ? A . 150, 8 in 2 C. 367. 6 in 2 B. 163. 4 in 2 D. 452. 4 in2D . 9 ) A solid wooden rectangular prism has dimensions 3 cm , 2 cm , and 5 cm . If it weighs 22.35 grams, what is the density of the wood it is made of ? A . 0. 75 9 / m 3 C. 1. 34 9 / cm 3 13. 0. 89 9/ cm 3 D. 2. 24 9lem3 10 ) A manicurist keeps clear nail polish in a glass box shaped like a prism with a square base that is 8 on tall. The box holds exactly enough polish inside it to completely coat the outside of it. If it takes 3 cm3 of polish to coat are cm of a surface What's the length of one edge of a base ? ? A. 48 am B. 32 am C. 24 cm D. 16 cm 11 ) A right cylinder with a diameter of 14 Inches and height of 24 inches gets scaled by a factor of a . write an expression for the Surface area in terms of a . A. 336 T Q 2 B. 336 xa3 C. 434 x Q2 D. 434 xa3 12 ) A regular square pyramid has a slant height of 18 am and a lateral area or 210 cm ?. What is the surface area ? A . 252 am 2 B. 234 CM 2 C. 225 on ? D. 240 cm 2 13 ) A candle in the shape of a square pyramid is to be made from 120 cm 3 of wax . If the candles height s 3 times the side length of the base, what will the height of the candle be , to the nearest tenth ? A. 4. 9 on C. 14 . 7 cm B. 7. I cm D. 21. 3 cm