Chapter 11 – Mensuration
104. Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the cases, which will fill the swimming pool faster?
10
Aug
104. Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the [...]
103. Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure.
10
Aug
103. Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure. 103. Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure. August 10, 2021 Category: Chapter 11 - Mensuration , Maths , NCERT Class [...]
102. A hollow garden roller of 42 cm diameter and length 152 cm is made of cast iron 2 cm thick. Find the volume of iron used in the roller.
10
Aug
102. A hollow garden roller of 42 cm diameter and length 152 cm is made of cast iron 2 cm thick. Find the volume of iron used in the roller. 102. A hollow garden roller of 42 cm diameter and length 152 cm is made of cast iron 2 cm thick. Find the volume of [...]
101. A truck carrying 7.8 m^3 concrete arrives at a job site. A platform of width 5 m and height 2 m is being contructed at the site. Find the length of the platform, constructed from the amount of concrete on the truck?
10
Aug
101. A truck carrying 7.8 m^3 concrete arrives at a job site. A platform of width 5 m and height 2 m is being contructed at the site. Find the length of the platform, constructed from the amount of concrete on the truck? 101. A truck carrying 7.8 m^3 concrete arrives at a job site. [...]
100. Find the area to be painted in the following block with a cylindrical hole. Given that length is 15 cm, width 12 cm, height 20 cm and radius of the hole 2.8 cm.
10
Aug
100. Find the area to be painted in the following block with a cylindrical hole. Given that length is 15 cm, width 12 cm, height 20 cm and radius of the hole 2.8 cm. 100. Find the area to be painted in the following block with a cylindrical hole. Given that length is 15 cm [...]
99. A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per minute.
10
Aug
99. A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per minute. 99. A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. [...]
98. A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood is 1 cm thick, how many cm^3 of wood is used in it?
10
Aug
98. A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood is 1 cm thick, how many cm^3 of wood is used in it? 98. A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood [...]
97. How many cubes each of side 0.5 cm are required to build a cube of volume 8 cm^3 ?
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Aug
97. How many cubes each of side 0.5 cm are required to build a cube of volume 8 cm^3 ? 97. How many cubes each of side 0.5 cm are required to build a cube of volume 8 cm^3 ? August 10, 2021 Category: Chapter 11 - Mensuration , Maths , NCERT Class 8 ,
96. Find the capacity of water tank, in litres, whose dimensions are 4.2 m, 3 m and 1.8 m?
10
Aug
96. Find the capacity of water tank, in litres, whose dimensions are 4.2 m, 3 m and 1.8 m? 3 m and 1.8 m? 96. Find the capacity of water tank in litres whose dimensions are 4.2 m August 10, 2021 Category: Chapter 11 - Mensuration , Maths , NCERT Class 8 ,
95. A cuboidal tin box opened at the top has dimensions 20 cm × 16 cm × 14 cm. What is the total area of metal sheet required to make 10 such boxes?
10
Aug
95. A cuboidal tin box opened at the top has dimensions 20 cm × 16 cm × 14 cm. What is the total area of metal sheet required to make 10 such boxes? 95. A cuboidal tin box opened at the top has dimensions 20 cm × 16 cm × 14 cm. What is the [...]