a well of diameter 140 cm has a stone parpet around it if the length of the outer edge of the parpet is 616 cm find the width of the parpet
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ar of circle with 140 cm =πr². 22÷7×140×140
ar of circle with 616 cm = π r². 22÷7×616×616
weadth = 22÷7×616×616-22÷7×140×140
ar of circle with 616 cm = π r². 22÷7×616×616
weadth = 22÷7×616×616-22÷7×140×140
jogendar:
answer is 6160
solving my equation u will get answer
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