the total surface area of a closed cylindrical petrol storage tank whose diameter 4.2m and height 4.5m
Answers
Answer:
59.4 m sq.
Step-by-step explanation:
Here, radius of the tank(r)=4.2/2=2.1m
height(h)=4.5m
Therefore, Total surface area of the tank
= 2πrh
= 2×22/7×2.1×4.5
= 44×0.3×4.5
= 59.4 m sq.
Answer:
The total surface area of a closed cylindrical petrol storage tank is 87.12 sq. m.
Step-by-step explanation:
Given: Diameter of cylindrical petrol storage tank = 4.2 m
And the height of tank = 4.5 m
Find the total surface area of a closed cylindrical petrol storage tank .
The total surface area of cylinder = 2πr(h + r)
where 'r' is the radius of the base and 'h' is the height of the cylinder.
Diameter = 4.2/2 = 2.1 m
The total surface area of a closed cylindrical petrol storage tank
= 2 × 22/7 × 2.1 [4.5 × 2.1]
= 2 × 22 × 0.3 [6.6]
= 44 × 1.98
= 87.12 sq. m.
The total surface area of a closed cylindrical petrol storage tank is 87.12 sq. m.