Question

9) (a) Find the height of the cylinder whose volume is 1.54 metre cube and diameter of the base is 140 cm​

Answer 1

Answer:

1 m or 100 cm

Step-by-step explanation:

Volume of a cylinder = πr²h

1.54 = (πr²) h

1.54 = 22 /7 × (d/2) ² ×h

1.54 = 22/7 × (140 /2) ² ×h

1.54 = 22/7 × 0.7 × 0.7 × h. (since 1 m = 100cm, 70 cm = 0.7m)

1.54 = 22 × 0.1 × 0.7 × h

h = 1.54 / 22 × 0.1 × 0.7

h = 154 / 22 × 0.1 × 0.7 × 100

h = 14 / 2 ×0.1 ×0.7 × 100

h = 14 / 2 × 7

h = 14 /14

h = 1 m = 100cm