Volume cuboid.pptx

math

1. Volume Of Cuboid

2. Remember Perimeter rectangle = ( Length + width ) x 2 width length length width

3. Remember Area rectangle = Length x Width width length

4. The Volume of Cuboid length width height

5. Volume Cuboid = Length x width x height Volume ( V ) Length ( L ) Width ( W ) Height ( H )

6. Ex(1) Find the volume of the cuboid its dimensions are 3 cm , 5 cm and 10 cm . Volume = L x W x H = 3 x 5 x 10 = 150 cm 3 Given v=900cm , l= 10cm w= 5cm find the hight ? H= volume / ( LxW )

7. Ex(2) If the volume of a cubiod is 168000 its length is 175 cm and its width 12 cm . Find its height. Height cuboid = = 80 cm Volume L x W 168 000 175 x 12 =

8. Ex(3) A swimming pool in the shape of cuboid , its base is of length 60 m. and its width is 40 m. Find its depth is 3600 m 3 of water fill this Swimming pool completely. Depth ( H ) = = 1.5 m. Volume L x W 3 600 60 X 40 =

9. Base Area [ rectangle ] = Length x Width Volume = B.A x H Volume ( V ) Height ( H ) Base Area ( B.A )

10. Ex(4) If the volume of a cubiod is 720 cm 3 and its height is 8 cm . Find its base area. Base area = = 90 cm² Volume H 720 8 =

11. Ex(5) Which is greater in volume ? A cubiod of dimensions 4 cm , 9 cm and 12cm A cubiod of height 6cm and base area 75 cm 2 1 st . Volume = L x w x h = 4 x 9 x 12 = 432 cm 3 2 nd . Volume = B.A x h = 75 x 6 = 450 cm 3 2 nd .Cuboid is greater than in Volume 1 st .Cuboid

12. Ex(6) A box is in the shape of cubiod its dimensions 30cm , 25cm , 15cm . If its filled with cuboid shaped pieces of sweets of dimensions 6cm , 5cm and 3cm Find the number of pieces of sweets in the box . 1 st . Volume = L x w x h = 30 x 25 x 15 = 11 250 cm 3 2 nd . Volume = L x w x h = 6 x 5 x 3 = 90 cm 3 No. of sweets = 11 250 90 = 125 Pieces

13. Ex(7) A cuboid has a square base of side length equals 8 cm. and its volume is 384 cm 3 Find its height. Height cuboid = = 6 cm Volume S x S 384 8 x 8 =