Answer:
Step-by-step explanation:
Perimeter of the pentagon = 20.5 cm
Length of 4 sides = 
Length of the other side = 2.1 cm
Perimeter of the pentagon will be
The value of is .
The formula for the volume of a rectangular prism is: l*w*h (length*width*height)
Since the Base area of a 3D figure is always the length times width of the bottom face, all we need to do to find the volume is multiply the Base area by the height.
173.6 (9) = 1562.4 cubic cm
Answer:
i got x equals 1/4
Step-by-step explanation:
Answer:
2.8 liters
She drank 2.8 liters all together.
Step-by-step explanation:
0.878+1.2+0.75= 2.8
Given that the formula is Cos θ = adj/hyp. We cannot apply the formula until we know what is the length of the hypotenuse.
To find hypotenuse, we will use the Pythagoras theorem:
a² + b² = c²
Substitute a = 6 and b = 8, we will be able to find c.
6² + 8² = c²
c² = 36 + 64
c² = 100
c = √100
c = 10
Now that we know that the hypotenuse is 10 units, we can find cos B:
Cos B = adj/hyp
Cos B = 8/10
Cos B = 4/5
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Answer: Cos B = 4/5
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