Answer:
Answer: -4
Step-by-step explanation:

Calculate would be my best guess
Area of circle is 314 inches^2
Circumference of circle is 62.8 inches
Step-by-step explanation:
We need to find area and circumference of the circle whose diameter is 20 inches.
Area of circle
The formula used to find area of circle is:

value of π = 3.14
we know radius = diameter/2
So, radius = 20/2 = 2
Putting value of π and radius we get Area:

So, Area of circle is 314 inches^2
Circumference of Circle
The formula used to find circumference of circle is:

value of π = 3.14
diameter= 20
Putting value of π and diameter we get Circumference:

So, circumference of circle is 62.8 inches
Keywords: Area and Circumference of Circle
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Answer:
No
Step-by-step explanation:
Use the pythagorian theorm to find whether it's a right triangle or not.
So the hyp will be the largest number. And the hyp must be equal to the sum of b and c squared
5.2 squared= 2.4 squared+ 4m5 squared
27.04= 26.01
It's not equal so the triangle isn't a right triangle.