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High School Mathematics
4.5 Total Surface Area of a Cube

Consider a cube with edge of a units. Then the total surface area of the cube is the area of all the 6 faces that is 6a2.

Example:
The side of a cube is 5cm. Find its total surface area.
Solution:
Total surface area of cube = 6a2.
Where a is side.
Given that a = 5cm.
Total surface area of cube = 6 * 52
= 6 * 25
= 150 Sq. cm.


Directions: Solve the following problems. Also write at least 5 examples of your own.

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Date:___________________

High School Mathematics
4.5 Total Surface Area of a Cube

Q 1: The side of a cube is 8cm. Find its total surface area.
388 Sq. cm.
384 Sq. cm.
382 Sq. cm.
386 Sq. cm.

Q 2: The side of a cube is 11cm. Find its total surface area.
728 Sq. cm.
722 Sq. cm.
724 Sq. cm.
726 Sq. cm.

Q 3: The side of a cube is 18cm. Find its total surface area.
1942 Sq. cm.
1946 Sq. cm.
1944 Sq. cm.
1948 Sq. cm.

Q 4: The side of a cube is 15cm. Find its total surface area.
1330 Sq. cm.
1340 Sq. cm.
1320 Sq. cm.
1350 Sq. cm.

Q 5: The side of a cube is 20cm. Find its total surface area.
2300 Sq. cm.
2400 Sq. cm.
2100 Sq. cm.
2200 Sq. cm.

Q 6: The side of a cube is 13cm. Find its total surface area.
1016 Sq. cm.
1014 Sq. cm.
1018 Sq. cm.
1012 Sq. cm.

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Question 8: This question is available to subscribers only!


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