Chapter 13 – Surface Areas and Volumes
Two identical solid cubes of side a units are joined end to end. Then the total surface area of the resulting cuboid is 12a^2.
26
Nov
Two identical solid cubes of side a units are joined end to end. Then the total surface area of the resulting cuboid is 12a^2. Two identical solid cubes of side a units are joined end to end. Then the total surface area of the resulting cuboid is 12a^2. November 26, 2020 Category: Chapter 13 - [...]
A spherical steel ball is melted to make a 8 new identical balls. Then, the radius of the each new ball be 1/8 th the radius of the original ball.
26
Nov
A spherical steel ball is melted to make a 8 new identical balls. Then, the radius of the each new ball be 1/8 th the radius of the original ball. A spherical steel ball is melted to make a 8 new identical balls. Then the radius of the each new ball be 1/8 th the [...]
A solid cone of radius r and height h is placed over a solid cylinder having same base radius and height as that of a cone,. The total surface area of the combined solid is πr[r^2+h^2−−−√2πrh]
26
Nov
A solid cone of radius r and height h is placed over a solid cylinder having same base radius and height as that of a cone,. The total surface area of the combined solid is πr[r^2+h^2−−−√2πrh] . The total surface area of the combined solid is πr[r^2+h^2−−−√2πrh] A solid cone of radius r and height [...]
The volume of the largest right circular cone that can be cut out from a cube of edge 4.2 cm is:
26
Nov
The volume of the largest right circular cone that can be cut out from a cube of edge 4.2 cm is: The volume of the largest right circular cone that can be cut out from a cube of edge 4.2 cm is: November 26, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths [...]
A cubical ice cream brick of edge 22cm is to be distributed among some children by filling ice cream cones of radius 2cm and height 7cm up its brim, how many children will get ice cream cones?
26
Nov
A cubical ice cream brick of edge 22cm is to be distributed among some children by filling ice cream cones of radius 2cm and height 7cm up its brim, how many children will get ice cream cones? A cubical ice cream brick of edge 22cm is to be distributed among some children by filling ice [...]
If a marble of radius 2.1 cm is put into a cylindrical cup full of water of radius 5cm and height 6 cm, then how much water flows out of the cylindrical cup?
26
Nov
If a marble of radius 2.1 cm is put into a cylindrical cup full of water of radius 5cm and height 6 cm, then how much water flows out of the cylindrical cup? If a marble of radius 2.1 cm is put into a cylindrical cup full of water of radius 5cm and height 6 [...]
A Funnel is the combination of
26
Nov
A Funnel is the combination of A Funnel is the combination of November 26, 2020 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 10 ,
A pen stand made of wood is in the shape of a cuboid with four conical depressions and a cubical depression to hold the pens and pins, respectively. The dimensions of cuboid are 10 cm, 5 cm and 4 cm. The radius of each of the conical depressions is 0.5 cm and the depth is 2.1 cm. The edge of the cubical depression is 3 cm. Find the volume of the wood in the entire stand.
26
Nov
A pen stand made of wood is in the shape of a cuboid with four conical depressions and a cubical depression to hold the pens and pins, respectively. The dimensions of cuboid are 10 cm, 5 cm and 4 cm. The radius of each of the conical depressions is 0.5 cm and the depth is [...]
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5 cm and 4 cm. The radius of each of the conical depressions is 0.5 cm and the depth is 2.1 cm. The edge of the cubical depression is 3 cm. Find the volume of the wood in the entire stand. ,
A pen stand made of wood is in the shape of a cuboid with four conical depressions and a cubical depression to hold the pens and pins ,
respectively. The dimensions of cuboid are 10 cm ,
The rain water from a roof of dimensions 22 m x 20 m drains into a cylindrical vessel having diameter of base 2 m and height 3.5 m. If the rain water collected from the roof just fill the cylindrical vessel, then find the rainfall (in cm).
26
Nov
The rain water from a roof of dimensions 22 m x 20 m drains into a cylindrical vessel having diameter of base 2 m and height 3.5 m. If the rain water collected from the roof just fill the cylindrical vessel, then find the rainfall (in cm). A solid iron cuboidal block of dimensions 4.4 [...]
Water flows through a cylindrical pipe, whose inner radius is 1 cm, at the rate of 80 cms^-1 in an empty cylindrical tank, the radius of whose base is 40 cm. What is the rise of water level in tank in half an hour?
26
Nov
Water flows through a cylindrical pipe, whose inner radius is 1 cm, at the rate of 80 cms^-1 in an empty cylindrical tank, the radius of whose base is 40 cm. What is the rise of water level in tank in half an hour? at the rate of 80 cms^-1 in an empty cylindrical tank [...]