The diameter of a circle is 7 meters. Find the circumference to the nearest tenth.
Mathematics · High School · Tue Nov 03 2020
llm
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Given: Diameter = 7 meters
Find: Circumference to the nearest tenth
C=2πr
Find first the radius.
Since diameter is twice the radius. Radius is equal to diameter divided by two.
r = d/2
r= 7/2
r = 3.5
Substituting the value of r in the equation C=2πr
C=2π(3.5)
C= 21.99 meters
Round to the nearest tenth
C= 20 meters