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4 years ago

Diameter = 21 inches Circumference Area

Mathematics

2 answers:

yawa3891 [41]4 years ago

6 0

Answer:

Circumference: 65.9734 inches

Area: 346.361 square inches

Step-by-step explanation:

If the diameter is 21 inches, we know the radius, r, is 10.5 inches because the radius measure is half of the diameter.

Circumference Formula: 2πr

=2π(10.5)

=65.9734 inches

Area formula: π $r^{2}$

π(10.5)^2

= 346.361 square inches

MAXImum [283]4 years ago

5 0

Answer:

Radius: 10.5

Circumeference: 65.97

Area: 346.36

Step-by-step explanation:

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