the base perimeter of a right cylinder is 44cm and its csa is132cm find its height
Answers
Answer: 21 cm
Step-by-step explanation:
base perimeterr of a right cylinder= 44cm.
Perimeter( circumference ) of base cylinder = 2πr
We have to find radius so .
44cm = 2× 22/7 ×r
2×22/7×r = 44cm
r = 44×7/2×22 cm
r = 7 cm
So radius of base of cylinder = 7 cm
Curved surface area = 132 cm .
According to question .
Curved surface area = 2πrh
132 cm = 2πrh
132 cm = 2 × 22/7 × 7 × h
2 × 22/7 × h = 132 cm
h = 132 ×7 /2×22
h = 21 cm
Height = 21 cm
Answer: 21 cm
Step-by-step explanation:
base perimeter of a right cylinder= 44cm.
Perimeter( circumference ) of base cylinder = 2πr
We have to find radius so .
44cm = 2× 22/7 ×r
2×22/7×r = 44cm
r = 44×7/2×22 cm
r = 7 cm
So radius of base of cylinder = 7 cm
Curved surface area = 132 cm .
According to question .
Curved surface area = 2πrh
132 cm = 2πrh
132 cm = 2 × 22/7 × 7 × h
2 × 22/7 × h = 132 cm
h = 132 ×7 /2×22
h = 21 cm
Height = 21 cm