It costs ₹49,280 to paint the inner curved surface of a dome. If the rate of painting is ₹40 per m square find the amount of air present in the dome
correct answer is 5749.33cm
step by step explaination expert answer
correct answer is 5749.33cm
step by step explaination expert answer
Answers & Comments
[tex]Curved \: surface \: area \: of \\ cylinder = 2\pi rh[/tex]
[tex]49280 = 2 \times \frac{22}{7} \times r \times 40 \\ \\ 49280 = \frac{44r \times 40}{7} \\ \\ (49280 \times 7) = 1,760 \: r \\ \\ 3,44,960 = 1,760 \: r \\ \\ r = \frac{3,44,960}{1,760} \\ \\ r = 196 \: {cm}^{2} [/tex]
Answer:
196 cm2
Step-by-step explanation:
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