Question

Savitri had to make a model of a cylindrical kaleidoscope for her science project. She wanted to use chart paper to make the curved surface of the Kaleidoscope. What would be the area of chart paper required by her, if she wanted to make a kaleidoscope of length 25cm with a 3.5cm radius. ​​

Answer 1

Answer:

$\huge \color{purple} \mathcal{ \colorbox{green}{\colorbox{white}{☑\: \: Answer }}}$

ur intro

Answer 2

$\bigstar\:\:\underline{\sf AnsWer :} \bigstar$

r = 3.5 cm

h = 25 cm

$\sf \: C. S. A = 2πrh$

$\sf \: = 2 \times \frac{22}{7} \times 3.5 \times 25$

$\sf = 550.0 \: {cm}^{2}$

$\sf \: = 550 \: {cm}^{2}$