Volume and Density - Topic 12

Question 1

Answer 1

A = 1/2 (a + b) h

A = 1/2 (3 + 9) 6A = 36cm2

V = a x l

V = 36 x 20

V = 720cm3

Question 2

Answer 2

A = 1/2 b x h

A = 1/2 (4 x 6)

A = 12cm2

V = a x l

V = 12 x 8

V = 9cm3

Question 3

Answer 3

V = πr2h

V = π x 4(2) x 20

V = 1005.3cm3

Question 4

Calculte density when piece of gold mass is 19.3g/cm3 and column is 32cm3

Answer 4

M = D x V

M = 19.3 x 32

M = 617.6g

Question 5

Calculate volume when density is 56g/cm3 and mass is 122g

Answer 5

V = M/V

V = 122/56

V = 2.18cm3

Question 6

Calculate density when mass is 617g and volume is 31cm3

Answer 6

D = M/V

D = 617/31

D = 200g/cm3