Elena bikes 20 minutes each day for exercise. Write an equation to describe the relationship between her distance in miles, D, a
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The area of the metal frame is sq. units.
Solution:
A circular mirror is surrounded by a square metal frame.
Radius of the circular mirror = 2x
Side length of the square frame = 10x
To find the area of the metal frame.
Area of the square frame = Side × Side
=
= sq. units
Area of the square metal frame = sq. units
Area of the circular mirror =
=
= sq. units
Area of the circular mirror = sq. units
Area of the metal frame = Area of the square frame – Area of the mirror
=
= sq. units
Hence the area of the metal frame is sq. units.