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### Geometry6.5 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.
 Q 1: The side of a cube is 17cm. Find its total surface area.1730 Sq. cm.1736 Sq. cm.1734 Sq. cm.1732 Sq. cm. Q 2: The side of a cube is 15cm. Find its total surface area.1330 Sq. cm.1340 Sq. cm.1350 Sq. cm.1320 Sq. cm. Q 3: The side of a cube is 8cm. Find its total surface area.388 Sq. cm.382 Sq. cm.384 Sq. cm.386 Sq. cm. Q 4: The side of a cube is 18cm. Find its total surface area.1942 Sq. cm.1944 Sq. cm.1948 Sq. cm.1946 Sq. cm. Q 5: The side of a cube is 9cm. Find its total surface area.482 Sq. cm.484 Sq. cm.486 Sq. cm.480 Sq. cm. Q 6: The side of a cube is 20cm. Find its total surface area.2300 Sq. cm.2400 Sq. cm.2100 Sq. cm.2200 Sq. cm. Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!

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