Question

An open cylinder bottle has base area equal to 44cm2.its length is 30cm..its total area?

Answer 1

Answer:

Total area of the open cylindrical bottle is 748.616 square cm

Step-by-step explanation:

Formula used:

Curved surface area of cylinder

$=2\pi\:r\:h$ square units

Base area of cylinder

$=\pi\:r^2$ square units

Given:

Height of the cylinder h = 30 cm

Base area of the cylinder = 44 square cm

$\pi\:r^2=44$

$\frac{22}{7}r^2=44$

$\frac{1}{7}r^2=2$

$r^2=2*7$

$r^2=14$

$r=\sqrt{14}$ cm

Total area of the open cylindrical bottle

= C.S.A of the bottle + Base area

$=2\pi\:r\:h+44$

$=2*\frac{22}{7}*\sqrt{14}*30+44$

$=2*(3.14)*(3.74)*30+44$

$=704.616+44$

$=748.616$ square cm.