The total surface area of the closed milk tin is 528 cm²
The shape of the closed tin of milk is cylinder.
The formula for calculating the total surface area of cylinder is the curved surface area of the cylinder + the area of the two circles(on the top and the bottom) which equals to 2πr(r+h), where r is the radius of the cylinder and h represents the height of the cylinder.
The diameter of the cylinder is 12cm and the height of the cylinder is 8cm.
The radius of the cylinder is half of the diameter of the cylinder which is 12/2=6cm
By putting the values, we get = 2×22/7×6(6+8)
= 264/7(14)
= 264(2)
= 528 cm²
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