surface area of cube and cuboids

presented by bhoomika S

1. WELCOME

2. Jss Mahavidyapeeta Mysore – 04 Jss Istitute of education Sakaleshapura-573134 Bhoomika.S. Previous year B.Ed. Jss institute of education Sakaleshapura

3. Surface Area Of Cube And Cuboid

4. What Is Surface? WHAT IS SURFACE AREA? Area occupied by the surface called surface area . 1 2 5 The uppermost or exposed portion of any object .

5. Surface area of cube and cuboid Difference Between Cube And Cuboid CUBE Cube is a shape having six surface, all the surface of the cube are square in shape. CUBOID Cuboid is also a shape having six surface , but all the surface are rectangular and only opposite surface are equal to each other .

6. Total surface area of cube l Surface area of square = l * l = l 2 Cube has 6 sides, So, total surface area of a cube = l 2 + l 2 + l 2 + l 2 + l 2 + l 2 =6 l 2 EXAMPLE : Find the total surface area of Cube taking length as 2cm? T.S.A.=6 (l) 2 = 6(2) 2 =6*4 =24 l

7. 2. Suppose a cube having a length 5cm. Find out the surface area of that cube. Solution : T.S.A . = 6l 2 Surface area of cube =6(5)^2 =6*25 = 150cm 2

8. Total surface area of cuboid The sum of the area of the six rectangle is: Area of rectangle 1 = ( l*h) + Area of rectangle 2 = ( l*b) + Area of rectangle 3 = ( l*h) + Area of rectangle 4 = (l*b) + Area of rectangle 5 = (b*h) + Area of rectangle 6 = (b*h) = 2 ( l * b ) + 2 ( b* h) + 2 ( l * h ) =2 ( lb + bh + hl )

9. Thank you