Surface Area of Cube and 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

Surface area of a cube.

Lateral surface area of a cuboid

Surface area of a cuboid

Three equal cubes are placed adjacently in a row.Find the ratio of total surface area of the new cuboid to that of the sum of the surface areas of the three cubes.

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.

The side of a cube is double the length of the cuboid. The breadth and height of the cuboid are half of its length. Find the ratio of the curved surface area of the cube to cuboid.

Three equal cubes are placed adjacently in a row.Find the ratio of total surface area ofthe new cuboid to that of the sum of the surface areas of the three cubes.