Half of a cuboidal water tank with length of 2.1 m and breadth of 1.5 m is filled with water. If 630 liters of water is poured into the tank, then calculate the increased height of water.
WBBSE
Class X
Mathematics
Rectangular Parallelopiped or Cuboid
04 Mark
2022
Length = 2.1 m
Breadth = 1.5 m
Base area = 2.1 × 1.5 = 3.15 m²
Volume poured = 630 L = \frac{630}{1000} m³ = 0.630 m³
Increase in height = \frac{0.630}{3.15} m
= 0.2 m
= 20 cm
The water level rises by 20 cm.
Related Questions
More WBBSE Easy level questions
1/12
Q.
Write the names of two bio-degradable polymers.
A.
Examples of biodegradable polymers : Polylactic acid (PLA) Polyhydroxybutyrate (PHB)
Q.
Explain the difference between minerals and ores.
A.
Minerals Ores Minerals are naturally occurring substances found in the Earth’s crust....
Q.
Name two copper containing alloys. State one use of each alloy.
A.
Two copper alloys: Copper Alloy Composition Uses Brass Copper (Cu): 60–80% Zinc...
Q.
What is now used in electrical circuits instead of fuse wire?
A.
MCB / Miniature circuit breaker
Q.
What type of lens is used as a magnifying glass?
A.
Convex lens Explanation: Convex lens forms virtual, erect, magnified image for objects...
Q.
Name the greenhouse gas discharged from a refrigerator.
A.
CFC / HFC
Q.
Which layer of atmosphere is susceptible to storm and rain?
A.
Troposphere Explanation: Troposphere is the lowest layer nearest to Earth's surface, where...
Q.
Which metal is used as catalyst in Haber’s process for preparation of ammonia?
A.
The metal used as a catalyst in the Haber’s process for the...
Q.
Which gas is produced at the cathode during electrolysis of acidified water?
A.
Hydrogen. Explanation: In electrolysis of acidified water with Pt electrodes, H⁺ ions...
Q.
State True or False: Electrolysis always involves the process of oxidation-reduction.
A.
True. Explanation: Electrolysis drives chemical reactions using electrical energy, involving oxidation at...
Q.
Which one of the following is the unit of electrical energy? (a) Watt (b) Ohm...
A.
(c) Kilowatt-hour Explanation: Electrical power is defined as work done per unit...
Q.
Which type of mirror produces virtual, diminished and erect image?
A.
(c) Convex mirror Explanation: A convex mirror always forms an image which...