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# NCERT Solutions(Part - 2) - Visualising Solid Shapes Class 7 Notes | EduRev

## Mathematics (Maths) Class 7

Created by: Praveen Kumar

## Class 7 : NCERT Solutions(Part - 2) - Visualising Solid Shapes Class 7 Notes | EduRev

The document NCERT Solutions(Part - 2) - Visualising Solid Shapes Class 7 Notes | EduRev is a part of the Class 7 Course Mathematics (Maths) Class 7.
All you need of Class 7 at this link: Class 7

Exercise 15.3

Question 1:

What cross-sections do you get when you give a:
(i) vertical cut (ii) horizontal cut to the following solids?
(a) A brick
(b) A round apple
(c) A die
(d) A circular pipe
(e) An ice-cream cone.

 S.No. Name of article Figure Vertical cut Horizontal cut (a) A brick   (b) A round apple   (c) A die   (d) A circular pipe   (e) An ice-cream cone   Exercise 15.4

Question 1:

A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow.

(You may try to experiment first and then answer these questions).   S.No. Object Shadow Shape's name (i) A ball Circle (ii) A cylindrical pipe Line (iii) A book Rectangle

Question 2:

Here are the shadows of some 3-D objects, when seen under the lamp of the overhead projector. Identify the solid (s) that match each shadow.

(There may be multiple answers for these!)    S. No. Shadow Shape's Name 3-D objects (i) Circle Chapatti, Football, Disc, Plate etc. (ii) Square Die, Square paper sheet, cubical magic box, Chalk box etc. (iii) Triangle Ice-cream cone, Birthday cap, etc. (iv) Rectangle Geometry box, Book, Table etc.

Question 3:

Examine if the following are true statements:

(i) The cube can cast a shadow in the shape of a rectangle.

(ii) The cube can cast a shadow in the shape of a hexagon.

(i) True

(ii) False

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