Calculate the volume of the following cylinder.

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Huu hapa ni utatuzi wa swali la kwanza:

1. Calculate the volume of the following cylinder

Kutoka kwenye mchoro, tunaona kuwa:
Kipenyo (diameter), $d = 20 \text{ cm}$
Urefu (height), $h = 50 \text{ cm}$

Tafuta eneo la duara la msingi.
Radi (radius), $r = \frac{d}{2} = \frac{20 \text{ cm}}{2} = 10 \text{ cm}$ .
Eneo la duara la msingi, $A = \pi r^2$ .
Tumia formula ya ujazo wa silinda.
Ujazo wa silinda, $V = A \times h = \pi r^2 h$ .
Tutatumia $\pi \approx 3.14$ au $\frac{22}{7}$ .
Badilisha namba kwenye formula.
$V = \pi (10 \text{ cm})^2 (50 \text{ cm})$ $V = \pi (100 \text{ cm}^2) (50 \text{ cm})$ $V = 5000 \pi \text{ cm}^3$
Kokotoa thamani ya mwisho.
$V \approx 5000 \times 3.14 \text{ cm}^3$ $V \approx 15700 \text{ cm}^3$
Ujazo wa silinda ni:
$\text{15700 cm}^3$

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