Answer:
4.2 cm
Step-by-step explanation:
The law of cosines is applicable.
l² = k² +m² -2km·cos(L)
l² = 5.1² +1.2² -2·5.1·1.2·cos(35°) ≈ 17.4236
l ≈ √17.4236
l ≈ 4.2 . . . cm
Answer: (1,4) (2,7) (3,10)
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Step-by-step explanation:
Using Pythagorean’s theorem, the side length is sqrt(89)
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Answer:

Step-by-step explanation:
The formula for the surface area of a pyramid is 