Question

The radius and height of the cylinder are 8cm and 14cm find:
(i) Curved surface area (i) total surface area (iii) volume​

Answer 1

Answer:

CSA= 704 cm²

TSA= 1106.28 cm²

Volume= 2816 cm³

Answer 2

Answer:

$\huge\underline\mathfrak\green{Answer}$

(I) curved surface area= 704cm²

(ll) total surface area= 1936

(lll) volume= 4928²

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• radius= 14cm
• height = 8cm

==> find, curved surface area of cylinder:-

$2\pi \: rh = 2\pi \: r \times 14 \times 8$

$2 \times \frac{22}{7} \times 14 \times 8$

$= 704 {cm}^{2}$

==> hence, the curved surface area of cylinder is:- 704cm²

(ll) find the total surface area of cylinder;-

$\underline\mathfrak\green{give:-}$

===> use formula:- the total surface area of cylinder is:- 2πr(r+h)

$= = > 2\pi \: r(r + h)$

$= = > 2 \times \frac{22}{7} \times 14(14 + 8)$

$= = > 2 \times \: 22 \times 2 \: (22)$

$= = > 88 \times 22$

$1936 {cm}^{2}$

==> hence, 1936cm² is the total surface area of cylinder

(lll) find the volume of cylinder:-

use formula:-

$= = = > \pi \: {r}^{2} h$

$= = = > \frac{22}{7} \times 14 \times 14 \times 8$

$= = = > 22 \times 2 \times 14 \times 8$

$= = = > 44 \times 14 \times 8$

$= = = > 4928 {cm}^{2}$

===> hence, the volume of cylinder is 4928cm²