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creativ13 [48]
3 years ago
13

Please show working for these 2 questions.

Mathematics
1 answer:
earnstyle [38]3 years ago
5 0
Question 6a:
Volume of the sand = 1/3π(10)²(25) = 2618 cm³

Answer: 2618 cm³

Question 6b:
 2618 cm³ = 1 hour
 2618 cm³ = 60 mins
 2618 cm³ = 3600 seconds
0.73 cm³ = 1 second

Answer: 0.73 cm³/s

Question 7a:
Volume = (1 x 10 x 10) + 1/2(1 + 2) x 10 x 10 = 100 + 150 = 250 m³

Answer: 250 m³

Question 7b:
250 m³ = 250 kl
1 kl = $1.98
250kl = $1.98 x 250 = $487.50

Answer:  $487.50
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