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Vitek1552 [10]
3 years ago
11

What is the total surface area of this shape A.220 B.100 C.120 D.300

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
6 0

Answer:

A. 220

Step-by-step explanation:

To find the total surface area of a square pyramid, you have to find the area of the base and all of the sides and add them together.

To find the area of the base:

Since the base is a square, all we have to do is multiply the length by itself.

10 * 10 = 100

The base is 100 square centimeters

To find the area of the sides:

Since the sides are triangles, we have to multiply the length times the height and divide it by 2.

10 * 6 = 60

60/2 = 30

The area of one side is 30 square centimeters

To find the total surface area:

Add the area of all 4 sides and the area of the base together to find the total surface area.

4(30) + 100 = surface area

120 + 100

220 = surface area

The surface area is A. 220 square centimeters.

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