Find the area of ring and difference of two circumference R=14cm r=7cm
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Step-by-step explanation:
r=7cm,R=14cm
from r=7cm
the shape of ring is in circle
area of ring πr²=22/7x7x7=154cm²
perimeter 2πr=2x22/7x7=44cm
from R=14cm
area. πr²=22/7x14x14=616cm²
perimeter=2πr=2x22/7x14=88cm
total area is 154+616=770cm²
difference in circumferences is
88-44=44cm
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