the diameter of a circle is 2.486 calculate the area with due regard to significant figures take
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AS DIAMETER IS GIVEN SO FIND OUT THE RADIUS.
RADIUS = 2.486/2
=2486/2000
= 1243 UNIT (MENTION UNIT EVERYTIME, IF ANY UNIT IS NOT THERE , THEN WRITE ONLY 'UNIT'.
THEN FIND OUT THE AREA.. FOR CIRCLE T.S.A AND C.S.A BOTH ARE SAME.
4pie r^2 unit^2 (as it is area so the unit will be unit^2)
put the value in place of r.
=4 pie (1243)^2
=4×22/7×1243×1243 unit^2
= 135964312/7 unit^2
=19423473.1428 unit ^2
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