Bissoy.com
Doctors Medicines MCQs Q&A

Total surface area of a cuboid having dimensions l*b*h is __________

Total surface area of a cuboid having dimensions l*b*h is __________ Correct Answer 2(lb + bh + lh)

As shown in the figure below, The total surface area of a cuboid is the sum of the area of six rectangles constituting the cuboid. The six rectangles forms three pairs of rectangles (which are at opposite sides) who have the same surface area. Area of one pair of rectangles having sides l and b = 2(l*b) Area of the second pair of rectangle having sides b and h = 2(b*h) Area of the third pair of rectangle having sides l and h = 2(l*h) The total area of the cuboid = sum of three pairs of rectangles = 2(l*b) + 2(b*h) + 2(l*h) = 2(lb + bh + lh).

Related Questions

What is the ratio of the volume of a cuboid to the volume of a cube? Statement I. The ratio of the height, breadth, and length of the cuboid is 1 : 2 : 3 and the total surface area of the cuboid is 352 cm2. Statement II. The total surface area of the cube is given to be 384 cm2. Statement III. The length of the cuboid is 3 times the height of the cuboid and 1.5 times the breadth of the cuboid. The difference between the length and the height of the cuboid is 8 cm.
The question below is followed by three statements I, II and III. You have to determine whether the data given is sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. What is the ratio of the volume of the cube to the volume of the cuboid? Statement I: The Total Surface Area of the cuboid is 550 cm2 and the ratio of the length, breadth and height of the cuboid is 2 : 3 : 1. Statement II: The Total Surface Area of the cube is 384 cm2. Statement III: The breadth of the cuboid is 1.5 times of the length of the cuboid and 3 times of the height of the cuboid. The difference between the height and the length of the cuboid is 5 cm.
The following questions have 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 cm2. 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.
Consider a cuboid with lateral surface area 18 m2 and total surface area 35.5m2 and height 1.5m. The edges of cuboid are extended such that its total surface area becomes 52 m2 and lateral surface area is 28m2 and height 2m. What is the ratio of length of cuboid in 1st case to the length of cuboid in 2nd case?
What is the total surface area of the cuboid? Statement I: The volume of the cuboid is 5184 cm3 and the ratio of the length, breadth and height of the cuboid is 3 : 4 : 2. Statement II: Total surface area of the upper and lower faces of the cuboid is 864 cm2 and the height of the cuboid is 12 cm.
A solid cube is cut out from a solid cuboid of length, breadth are in the ratio 3 : 2 and the height of cuboid is 3 less than the breadth. If the area of four walls of cuboid is 200 cm2 then find the total surface area of the resultant solid where side length of cube is 60% of the height of the solid cuboid. 
if the length of the cuboid is 1/2 of the perimeter of square and breadth of the cuboid is 1/4 of the perimeter of the square and height of the cuboid is 3/2 of the side of the square if the side of the square is equal to 1/2 of the length of the rectangle if the breadth of the rectangle is 1/4 of the area of the rectangle which is 64cm2 then find the lateral surface area of the cuboid.
 If a cuboid of dimensions 32 cm × 12 cm × 9 cm is cut into two cubes of same size, what will be the ratio of the total surface area of the cuboid to the total surface area of the two cubes? 
If a cuboid of dimensions 16 cm × 12 cm × 8 cm is melted into three identical cubes. Then, what will be the ratio of the total surface area of the cuboid to the total surface area of the three identical cubes?
If a cuboid of dimensions 32 cm × 12 cm × 9 cm is melted and recast into two equal cubes of the same size, what will be the ratio of the total surface area of the cuboid to the total surface area of the two cubes?