Surface Area of Cuboid and Cube

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

Surface area of cube

Surface area of a cuboid

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 ?

A cuboid which sides 6 cm, 9 cm and 32 cm is melted to form a new cube. What is the ratio between the total surface area of the cuboid and that of the cube?

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.

Surface area of a cube.

Volume and Total surface area of cuboid