Question

The height of the cylinder is 18cm and the circumference of the base 44cm. Find its volume one curved surface area

Answer 1

Step-by-step explanation:

Height= 18cm

Circumference= 44cm

2πr= 44cm

r=

$\frac{44 \times7}{2 \times 22}$

r= 7cm

Now,

Volume of cylinder

$= \pi {r}^{2} h \\ = \frac{22}{7} \times 7 \times 7 \times 18 \\ = 22 \times 7 \times 18 \\ = 2772 \: {cm}^{3}$

Answer 2

Answer:

Volume of the cylinder =  2772 cm³

Curved surface area of cylinder = 198 cm²  

Step-by-step explanation:

Given data

Height of the cylinder h = 18 cm

and circumference of the base = 44 cm

here we need to find volume and curved surface area of the cylinder

from given circumference of base 2πr = 44 cm

                                                    2$(\frac{22}{7} )$ r = 44 cm

                                                      44 (r) = 44(7)

                                                             r = 7 cm  

∴ radius of the base of the cylinder r = 7 cm

Volume of the cylinder = π r² h  = $\frac{22}{7}$ (7²) (18)

                                                    = 22(7)(18) = 2772 cm³

Curved surface area of cylinder = 2π r h  

                                                     = 2$(\frac{22}{7})$ 7(18) = 11(18) = 198 cm²