App Logo

No.1 PSC Learning App

1M+ Downloads
How many solid spheres each of diameter 6 cm could be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm?

A5

B3

C6

D4

Answer:

A. 5

Read Explanation:

Volume of one sphere x Number of sphere = Volume of Cylinder 4/3πr³ x N = πr²h 4/3 x π x 3 x 3 x 3 x N = π x 2 x 2 x 45 N=5 No of Spheres=5


Related Questions:

If each interior angle of a regular polygon is 135°, then the number of sides that polygon has is:
A regular hexagon is inscribed in a circle of radius 6 cm. Find its area enclosed by the hexagon:

The height of a trapezium is 68 cm, and the sum of its parallel sides is 75 cm. If the area of the trapezium is 617\frac{6}{17} times of the area of a square, then the length of the diagonal of the square is: (Take 2=1.41\sqrt{2}= 1.41)

ഒരു വൃത്തസ്തൂപികയുടെ ഉയരവും, ചരിഞ്ഞ ഉയരവും യഥാക്രമം 20 സെന്റിമീറ്ററും 25 സെന്റിമീറ്ററുമാണ്, വൃത്തസ്തൂപികയുടെ വ്യാപ്തം കണ്ടെത്തുക.
A hall 20 metres long and 15 metres broad is surrounded by a verandah of uniform width of 4metres. The cost of flooring the verandah, at 10 per square metre is