A water storage tank has a cylindrical shape. If it is 2.1 m high and has a diameter 1.4 m, its lateral surface area is
8.74 m2
9.76 m2
6.24 m2
9.24 m2
Find
1)the lateral surface area of a closed cylindrical petrol storage tank that is 4.2m in diameter and 4.5m high.
2)howuch steel was actually used,if 1/12 of the steel actually used was wasted in making the tank.
Find the lateral curved surface area of a cylindrical petrol storage tank that is 4.2 m in diameter an 4.5 m high. How much steel was actually used, if 112 of steel actually used was wasted in making the closed tank?