Cbse | Question Based Upon Surface Area Of A Cuboid And A Cube

Lateral surface area of a cuboid

Introduction ||Cuboid,Properties OF Cuboid,Surface||Area OF coboid,cube,body diagonal,face diagonal,Edges,Lateral Surface Area OF Cuboid and Cube √l2+b2+h2 ||Derivation OF body diagonal ||Perimeter OF Cuboid||Discusssion OF Examples 1,2 and Exercise-13.2

A cuboid of sides 5 cm, 10 cm and 20 cm are melted to form a new cube. What is the ratio between the total surface area of the cuboid and that of the cube ?

A cuboid of sides 9 cm, 27 cm and 24 cm is melted to form a cube. What is the ratio between the total surface area of the cuboid and that of the cube ?

Three cubes each of side 15 cm are joined end to end. The total surface area of the cuboid is :

The following question has three statements. Study the question and the statements and decide which of the statement(s) is/are necessary to answer the question. What is the ratio of the volume of the cube to the volume of the cuboid? I. The Total Surface Area of the cuboid is 352 cm2 and the ratio of the length, breadth and height of the cuboid is 3:2:1. II. The Total Surface Area of the cube is "726 cm"^2 . III. The length of the cuboid is 1.5 times of the breadth of the cuboid and 3 times of the height of the cuboid. The difference between the height and the length of the cuboid is 8 cm.

State whether the statements are true (T) or false (F). The surface area of a cuboid formed by joining face to face 3 cubes of side x is 3 times the surface area of a cube of side x.