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1. The sum of all the areas of all the shapes that cover the
object is called its _______ area.
2. Calculate the total surface area of the cube whose edge is 1
cm.
3. How many identical square surfaces are there in a cube?
4. What is the difference between plane figures and solid
figures?
7th Grade Surface Area Worksheets
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5. The total surface area of a cubical die is 24 cm
2
. Find the
length of each edge?
6. The total surface area of a cubical box is 96 cm
2
. What is
the length of its edge?
7. The edge of a cubical room is 3 m. The inner walls are to be
painted (inclusive of windows and doors). Find the
expenditure to be incurred at the rate of $5 per square
metre.
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8. Give two examples for a cuboid.
9. The inner perimeter of a rectangular room is 250 m. Its
height is 6 m. What is the amount to be spent to paint the
walls of the room at the rate of $2 per square metre.
(inclusive of doors and windows)
10. Find the area of the cardboard required to make a closed
box of length 25 cm, breadth 10.5 cm and height 15 cm.
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1. Surface area
6. 4 cm
2. 6 cm
2
7. $180
3. Six
8. Book and brick.
4. A plane figure has two
dimensions of length and
breadth while a solid
figure has three
dimensions of length,
breadth, and height.
9. $3000
5. 2 cm
10. 1590 cm
2
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1. The skin of an average adult covers
an area of 2 square meters.
2. Human lungs contain about 500
million air pouches for exchange of
oxygen. They create a surface area
of around half the size of a tennis
court.