Find the total surface area of a regular quadrangular prism if the side of the base is 5cm and the height is 7cm.

The total surface area Spov consists of two areas of the base, Pine and the area of the lateral surface Sbok, and the formula has the form:

Spov = 2 * S main + Sbok.

We find the Pine with a = 5 cm: 5 cm * 5 cm = 25 cm ^ 2.

We find the side at side a = 5 cm, height n = 7 cm: 4 * a * n = 4 * 5 * 7 cm ^ 2 = 140 cm ^ 2.

We find Cpov = 2 * 25 cm ^ 2 + 140 cm ^ 2 = 50 cm ^ 2 + 140 cm ^ 2 = 190 cm ^ 2.

Answer: the surface area is 190 cm ^ 2.



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