Question

The total surface
440cm².
radius is 7m.
2. find the height
area of cylinder is
it of cylinder if its​

Answer 1

Answer:

HII MATE

HERE'S THE ANSWER

Step-by-step explanation:

curved surface area=440cm^2

total surface area=748 cm^2

volume= 1540 cm^3

Step-by-step explanation:

h = 10cm

r=7cm

NOW,

CSA of cylinder = 2 \pi \: rh2πrh

\begin{lgathered}= 2 \times \frac{22}{7} \times 7 \times 10 \\ = 44 \times 10 \\ = \: 440{cm}^{2}\end{lgathered}

=2×

7

22

×7×10

=44×10

=440cm

2

NOW,

TSA cylinder =

2 \pi \: r(h + r)2πr(h+r)

\begin{lgathered}= 2 \times \frac{22}{7} \times 7(10 + 7) \\ = 44 \times 17 \\ = 748 {cm}^{2}\end{lgathered}

=2×

7

22

×7(10+7)

=44×17

=748cm

2

NOW,

volume of cylinder =

\pi {r}^{2}hπr

2

h

\begin{lgathered}= \frac{22}{7} \times 7 \times 7 \times 10 \\ = 1540{cm}^{3}\end{lgathered}

=

7

22

×7×7×10

=1540cm

3

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