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Ksju [112]
3 years ago
7

Can you pls help me solve this?​

Mathematics
2 answers:
soldi70 [24.7K]3 years ago
7 0

Answer:

x=6. x=15

Step-by-step explanation:

13. x=6

16. x=15

MissTica3 years ago
4 0

Answer:

15: x = 6

16: x = 15

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Please someone what is the total surface area of this pryamid ​
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Answer:

\large\boxed{C.\ (25+25\sqrt3)\ in^2}

Step-by-step explanation:

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a - length of side

The formula of an area of an equilateral triangle:

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A_S=x^2\ in^2

TRIANGLE:

A_T=\dfrac{x^2\sqrt3}{4}\ in^2

The SURFACE AREA of a square pyramid:

S.A.=A_S+4A_T\\\\S.A.=x^2+4\cdot\dfrac{x^2\sqrt3}{4}=x^2+x^2\sqrt3

Put x = 5:

S.A.=5^2+5^2\sqrt3=(25+25\sqrt3)\ in^2

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