Question

find it urgent i need it ​

Answer 1

Answer :-

Let r = small radius = 7cm

Let R = Big radius = 28cm

Height of tank = 45 cm

Vol of tank =

$vol = \frac{\pi}{3} h( {R}^{2} + {r}^{2} + R \times r) \\ \\ \frac{22}{7 \times 3} \times 45( {28}^{2} + {7}^{2} + 28 \times 7) \\ \\ \frac{22}{21} \times 45(784 + 49 + 196) \\ \\ \frac{22}{7} \times 15 \times 1029 \\ \\ 22 \times 15 \times 147 = 14510 {cm}^{3}$

water harvested by 100 peoples

14510 x 100 = 1451000 cm³ = 145.1 m³

Answer 2

Answer:

ya nice meeting you hut can we become frnds anywhere else?? like sn ap ch at or in sta