The ratio between the radius of the base and height of the cylinder is 2:3 if its volume is 12936 then what is the TSA
Answers
Answered by
0
Answer: 3080 sq.
unit
Step-by-step explanation:
Let base be 2x and height be 3x
22/7 x (2X)(2X) x 3X = 12936
22/7 x 12X^3 = 12936
X^3 = 49 x 7
X^3 = 7x7x7
X = 7
TSA = 2πrh + 2πr^2
r = 2X , h= 3X
r = 14 , h= 21
TSA = 88x35
= 3080
Answered by
0
Answer:
8470 cm³
Step-by-step explanation:
Total surface area of the solid cylinder =(2πr²+2πrh)
=2πr(r+h)=2 x22/7 x7(7+h) =2728
So(7+h)= 2728÷{2x22}
(7+h) =62
So h= (62–7)= 55 cm
So volume of the cylinder = πr²h =22/7 x 7²x 55
= 8470 cm³
8470 cm³
Step-by-step explanation:
Total surface area of the solid cylinder =(2πr²+2πrh)
=2πr(r+h)=2 x22/7 x7(7+h) =2728
So(7+h)= 2728÷{2x22}
(7+h) =62
So h= (62–7)= 55 cm
So volume of the cylinder = πr²h =22/7 x 7²x 55
= 8470 cm³
Similar questions