Question

VIII. A well of diameter 150 cm has a stone parapet around it. If the length of the outer edge of the parapet is 616 cm, find the width of the parapet.​

Answer 1

Step-by-step explanation:

Let radius and diameter of the parapet is R and D respectively.

Sine, length of the outer edge of the parapet = 616 cm.

Therefore,

Now, width of the parapet = ( diameter of the well - diameter of parapet )/2 = (d-D)/2 = (196-150)/2 = 23 cm

Hence, width of the parapet is 23 cm.