Question

(The installation cost of a 20 m3 (cubic meter) stainless-steel tank in 1975 was $5000. The tank is cylindrical with flat top and bottom, and the diameter is 6 m. If the entire outer surface of the tank is to be covered with 2-in. thickness of Magnesia block, estimated the present total cost for the insulated tank at 1980. The cost for the 2-in. magnesia block was $1.40 per m2 (square meter) while the labor for installing the insulation was $3.00 per m2 (square meter) (1980
find
1- the cost of the insulated tank at 1980
2 the height of the tank
3 the total cost of the magnesia block for covering the tank
4 the total cost of the labory for covering the tank
5 total cost of the tank

Answer 1

given in installation m3 ntainless steel cost of 20m3 tank in $ 5000 1975 with flat tank! Dimensions od cylindrical tank with top & bottom: d = 6m. tank diameter of to be tank is Entire outer surface of thick Magnesia Magnesia block 2 in with covered block : $1.40 /m² 2-in Magnesia cost of $3/m2 labor find 1980:- cost of insulated tank in :) (1)

(Am) index value at present wst original wit* (index present time mies time (index value at original wwit was obtained) 1975 444 index value at Now 19 20 560 Index value at are Marshall & Swift installed ( these indexes) equipment $5000 ( 560) wit at 1980 = (444) 6306.306 $ tank Ch) 2) Find height of (2)

volume od a cylinder (пх*) 3 m 8= radius ele pla 20 ms T(3m) ² (2) ha 20 T (32) ha 0.7077 m tank. block covering 3) magnesia Total wit of top nurface area 4 p surface area side bottom nurface area (3)

Total our surface area of tank nurface area of top+ (As) surface area of bottom + surface area of size. AS (TT82) + (1782)+ atrh 2ti8l0th) anoh As = arr? ma As 2 * 3.14 * (3) ( 3+0.7077) As 69.85 m2 block / m²= $1.40 /m² given wit of magneria block / m 97.79$ $1.40 x 69.85m²= total wit ma labori ost od a) Total $3 ima labor / m² wit of giveni

total costa $3.00 69.85m 1$ 209.55 5) Total tankin cost of à + wit of magnesia installation wit + wit of labor $(6306.306 + + 97.79 +209.55) (in 1980) $ 6613.646