the radius of the base of a closed right circular cylinder is 21 cm and its height is 1 m. find the total surface area of the cylinder
Answers
Answer:
15972 sq.cm
tep-by-step explanation:
Radius of the cylinder=21 cm
Height of the cylinder=100 cm
Total Surface Area of the cylinder=2πr(r+h)
=2×22/7 ×21(21+100)
=44×3(121)
=132(121)
=15972 sq.cm
Answer:
Total Surface Area of the Cylinder is 1.5972 m² or 15972 cm².
Step-by-step explanation:
Given: Radius of the Right circular cylinder , r = 21 cm
Height of the cylinder , h = 1 m
To find: Total Surface Area of the cylinder.
We know that Total surface area of the cylinder = 2πr ( r + h )
r = 21 cm
h = 1 m = 1 × 100 = 100 cm
So, Total Surface Area of the cylinder = 2 × 22/7 × 21 × ( 21 + 100 )
= 2 × 22 × 3 × 121
= 15972 cm²
1cm² = 1/10000 m²
So,
Surface Area of the cylinder = 1.5972 m²
Therefore, Total Surface Area of the Cylinder is 1.5972 m² or 15972 cm².