Answer:
D: 109 cm
Step-by-step explanation:
The formula of circumference is
Diameter =
Hence, circumference =
rounded of to 109.
Construction crew is using heavy equipment to dig a hole in which the foundation of a house will be built. The whole will be in
1 answer:
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The simplified version of this equation is
Answer:
The shaded are is
Step-by-step explanation:
we know that
The shaded area is equal to the area of the semicircle minus the area of the circle inside the semicircle
step 1
Find the area of semicircle
The area of semicircle is equal to
where
----> the radius is half the diameter
substitute
step 2
Find the area of the circle inside the semicircle
The area of circle is equal to
where
---> the radius of circle inside is half the radius of semicircle
substitute
step 3
Find the shaded area
assume
3 significant figures is