1.

a circular path is enclosed by two concentric circles. if the outer circumference of the path is 88cm and the uniform width of the path is 3.5cm , find the area of the path.

Answer»

Okay,

what u do is find the radius of OUTER circle of which the circumference is given ie 2πr = 88cm which is equal to 14.01 cm.....
by using the radius subtract the radius by WIDTH given to u to find the inner radius of the circle ie 14.01 - 3.5 = 10.5cm. Now find the area of both the circles and subtract the areas to GET the area of the path



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