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The edge of a cube is decreasing at the rate of 0.04 cm/sec. If the edge of cube is 10 cm, then the rate of decrease of its surface area is

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NCERT EXEMPLAR-VISUALISING SOLID SHAPES -EXERCISE
  1. Draw the net of a regular tetrahedron with side 6 cm.

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  2. Draw the net of the following cuboid:

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  3. Match the following:

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  4. Complete the table given below by putting tick mark across the respect...

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  5. Draw the net of the following shape.

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  6. Draw the net of the following solid.

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  7. Find the number of cubes in the base layer of the following figure.

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  8. In the above figure, if only the shaded cubes are visible from the top...

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  9. How many faces, edges and vertices does a pyramid have with n sided po...

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  10. Draw a figure that represents your mathematics textbook. What is the n...

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  11. In the given figures, identify the different shapes involved.

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  12. The edge of a cube is decreasing at the rate of 0.04 cm/sec. If the ed...

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  13. Draw a map of your school playground. Mark all necessary places like 2...

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  14. A photographer uses a computer program to enlarge a photograph. What i...

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  15. The side of a square board is 50 cm. A student has to draw its image i...

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  16. The distance between school and house of a girl is given by 5 cm in a ...

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  17. Use a ruler to measure the distance in cm between the places joined by...

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  18. The actual length of a painting was 2 m. What is its length in the pho...

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  19. Find the scale. (a) Actual size 12 m Drawing size 3 cm (b) Actual ...

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  20. In a town, an ice cream parlour has displayed an ice cream sculpture o...

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