Advertisement Remove all ads

From a Rectangular Sheet of Paper Abcd with Ab = 40 Cm and Ad = 28 Cm, a Semicircular Portion with Bc as Diameter is Cut Off. Find the Area of the Remaining Paper. - Mathematics

Sum

From a rectangular sheet of paper ABCD with AB = 40 cm and AD = 28 cm, a semicircular portion with BC as diameter is cut off. Find the area of the remaining paper. 

Advertisement Remove all ads

Solution

We know that the opposite sides of rectangle are equal

∴ AD = BC = 28 cm
Now, Radius of semicircular portion` =1/2"BC = 14 "cm" `

∴ Area of remaining paper = Area of rectangular sheet −Area of semicircular portion

`= 40xx28-1/2(22/7xx14xx14)`

= 1120 - 308

= 812 cm2

Hence, the area of the remaining paper is 812 cm2

  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

RS Aggarwal Secondary School Class 10 Maths
Chapter 18 Area of Circle, Sector and Segment
Exercise 18A | Q 27 | Page 820
Advertisement Remove all ads

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×