Question
A hollow cylindrical drum has an internal radius of 4.8 cm.
If its length is 18 cm and the thickness is 2.5 cm, calculate the volume of the drum. (Use π = 3.14)Solution
ATQ,
Outer radius of drum = 4.8 + 2.5 = 7.3 cm
Volume of hollow cylinder = π × height × [(outer radius)² - (inner radius)²]
= 3.14 × 18 × (outer radius + inner radius) × (outer radius - inner radius)
= 3.14 × 18 × (7.3 + 4.8) × (7.3 - 4.8)
= 3.14 × 18 × 12.1 × 2.5
= 3.14 × 18 × 30.25
= 1,708.05 cm³
Noise is measured in –
What is the primary cause of tides on Earth?
The atom of an element contains 2 electrons in its M-shell. The element is:
Which planet is the largest in the solar system?
The SI unit of surface tension is:
NaOH + HC1 -> NaCl + Hâ‚‚ O in the given chemical reactionÂ
Who explained the structure of protein?
The position, relative size and nature of the image formed by a concave lens for an object placed at infinity are respectivelyÂ
Which of the following statements is not correct about the dual nature of matter?
A liquid initially contracts when cooled down to 4°C but on further cooling down to 0°C, it expands. The liquid isÂ
Relevant for Exams:
