since r is positive, the correlation is also positive also, since r is closer to 0 than 1, the correlation is weak
90 degrees
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Total surface area equals area of 5 rectangular faces + 2 pentagonal faces
Area of 5 rectangular faces


Area of 2 pentagonal faces can be found by drawing 5 isosceles triangles with height as shown in the diagram and multiply the result by 2.


The toatal surface area is

The correct answer is A
2a + 3b, 6ab, And 2b + 3a