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Maths Wiz Class 7 Solutions Chapter 11 Three Dimensional Shapes
Welcome to NCTB Solutions. Here with this post we are going to help 11th class students for the Solutions of Maths Wiz Class 7 Math Book, Chapter 11, Three Dimensional Shapes. Here students can easily find step by step solutions of all the problems for Three Dimensional Shapes, Exercise 11A and 11B Also here our mathematics teacher’s are solved all the problems with easily understandable methods with proper guidance so that all the students can understand easily. Here in this post students will get chapter 11 solutions. Here in this post all the solutions are based on ICSE latest Syllabus.
Three Dimensional Shapes Exercise 11A Solution :
Question no – (1)
Solution :
(a) How many edges does the figure have?
= The fig have 12 edges
(b) Which edges have the same length?
= AD, EH, BC, FG, AE, DH, BF, CG, AB, EF, DC, HG
(c) Name all the edges and the faces which intersect to from these edges.
| Edge | Face |
| AD | ABCD, DAEH |
| AB | ABCD, ABFH |
| AE | DAEH, ABFE |
| BC | ABCD, CBFG |
| BF | ABFE, CBFG |
| DC | ABCD, DCGH |
| EH | EFGH, DAEH |
| CG | DCGH, CBFG |
| EF | ABFE, EFGH |
| FG | EFGH, CBFG |
Question no – (2)
Solution :
(a) What is the shape of each face?
= Square.
(b) Is each edge in this figure of the same length?
= Yes
Question no – (3)
Solution :
| A | B |
| (a) One curved surface, one plane surface | (i) Cone |
| (b) One unbroken curved surface | (ii) Sphere |
| (c) One curved surface, two plane faces of equal size | (iii) Cylinder |
| (d) Six square faces | (iv) Cube |
| (e) One square base, four triangular faces | (v) Pyramid |
| (f) There rectangular faces, two triangular bases of equal of size | (vi) Triangular prism |
Question no – (4)
Solution :
(a) Cube = Solid.
(b) Cone = Solid.
(c) Quadrilateral = Plane.
(d) Circle = plane.
(e) Cylinder = solid.
(f) Triangle = Plane.
(g) Triangular prism = solid.
(h) Sphere = solid.
(i) Octagon = plane.
(j) Pyramid = solid.
Question no – (5)
Solution :
(a) Each face of a cuboid has 4 edges
This statement is True.
(b) A cone has two circular faces
This statement is False.
(c) A triangular pyramid has 8 edges
This statement is True.
(d) Sphere is a solid figure with no edge and no vertex
This statement is True.
(e) A brick has the shape of a cube
This statement is False
Next Chapter Solution :
👉 Chapter 14 👈
