Question

Answer this question with steps pls..​

Answer 1

Area of white wash × cost of white wash = total cost

$area \: of \: white \: wash \: \times 2 = rs498.96 \\ area = \frac{498.96}{2} \\ area = 249.48 m^{2}$

ll)

$volume \: of \: hemisphere \: = \frac{2}{3} \pi {r}^{2}$

let radius 7m

surface area of dome =249.48

$2\pi {r}^{2} = 249.48 \\ 2 \times \frac{22}{7} {r}^{2} = 249.48 \\ {r}^{2} = \frac{249.48 \times 2}{2 \times 22} \\ {r}^{2} = 39.69 \\ r = \sqrt{39.69} \\ r = 6.3$

$volume \: inside \: air \: of \: room \: = volume \: of \: hemisphere \\ \\ = \frac{2}{3} \pi {r}^{2} \\ = \frac{2}{3} \frac{22}{7} \times 6.3 \times 6.3 \times 6.3 \\ = 523.908 {m}^{3}$

thanks

mark branliest

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