Answer/Step-by-step explanation:
<em>Formula:</em>
<em>C = 2πr</em>
<em>Note: π = 3.14(About)</em>
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<em>[3] It given that the diameter is 16 ft.</em>
Diameter - a straight line passing from side to side through the center of a body or figure
Radius - Half of Diameter
C = 3.14(16)
= 50.24 ft
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<em>[4] It given that the radius is 7.5 in</em>
<em>Radius - a line segment extending from the center of a circle or sphere to the circumference or bounding surface.</em>
<em>C = 3.14(15)</em>
<em>= 47.1 in</em>
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<em>[5] It given that the radius is 42 m </em>
<em>C = 3.14(84)</em>
<em>= 263.76 m</em>
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<u><em>As Noted : π is approximately 3.14. Thus the answers are approximately</em></u>
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<em>For more information:</em>
<em>brainly.com/question/3471062</em>
<em>brainly.com/question/19434251</em>
<em>brainly.com/question/22387244</em>
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<u><em>Kavinsky</em></u>
