Question

The one present in today’s
cracker is in the shape of a
cuboid. The total surface
area of the cuboid is 100
square centimetres. The
length of each edge is a
whole number of
centimetres. What are the
dimensions of the cuboid?

Answer 1

Answer:

person_pin CBSE library_books VOLUME class CLASS 9 favorite 113.9 K

TABLE OF CONTENT

TABLE OF CONTENT

13.1 INTRODUCTION

13.2 SURFACE AREA OF A CUBOID AND A CUBE

13.3 SURFACE AREA OF A RIGHT CIRCULAR CYLINDER

13.4 SURFACE AREA OF A RIGHT CIRCULAR CONE

13.5 SURFACE AREA OF A SPHERE

13.6 VOLUME OF A CUBOID

13.7 VOLUME OF A CYLINDER

13.8 VOLUME OF A RIGHT CIRCULAR CONE

13.9 VOLUME OF A SPHERE

E X E R C I S E 13.1

E X E R C I S E 13.2

E X E R C I S E 13.3

E X E R C I S E 13.4

E X E R C I S E 13.5

E X E R C I S E 13.6

E X E R C I S E 13.7

E X E R C I S E 13.8

E X E R C I S E 13.9 (OPTIONAL)*

13.1 INTRODUCTION

Wherever we look, usually we see solids. So far, in all our study, we have been dealing with figures that can be easily drawn on our notebooks or blackboards. These are called plane figures. We have understood what rectangles, squares and circles are, what we mean by their perimeters and areas, and how we can find them. We have learnt these in earlier classes. It would be interesting to see what happens if we cut out many of these plane figures of the same shape and size from cardboard sheet and stack them up in a vertical pile. By this process, we shall obtain some solid figures (briefly called solids) such as a cuboid, a cylinder, etc. In the earlier classes, you have also learnt to find the surface areas and volumes of cuboids, cubes and cylinders. We shall now learn to find the surface areas and volumes of cuboids and cylinders in details and extend this study to some other solids such as cones and spheres

Step-by-step explanation: