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harina [27]
3 years ago
15

A square pyramid is made up of a base with a side length of 10 inches and faces that are triangles with a height of 12 inches. W

hat is the surface area of the square pyramid?
120 square inches
125 square inches
240 square inches
340 square inches
Mathematics
2 answers:
trapecia [35]3 years ago
8 0

Answer: 340 square inches

Step-by-step explanation:

Each Face of a triangle has an area of 60 which makes a total of 240. Then there is the base of 100 making 340 square inches the answer

Andrews [41]3 years ago
4 0

Answer:

D. 340 square inches

Step-by-step explanation:

Side length translates to 1 side of the square, so you do 10 x 10 to find the area of the square.

10 x 10 = 100

The triangle one isn't much more difficult. The formula for finding the area of a triangle is bh1/2

So:

10 x 12 = 120/2=60

From there just multiply the result by 4- the amount of triangles on the square pyramid, and you'll get your answer.

60

x 4

240 + 100 = 340 square inches

if this helped brainliest would be epic

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