ICSE Class 10CISCE
Share
Notifications

View all notifications

A Circle with Diameter 20 Cm is Drawn Somewhere on a Rectangular Piece of Paper with Length 40 Cm and Width 30 Cm. this Paper is Kept - ICSE Class 10 - Mathematics

Login
Create free account


      Forgot password?

Question

A circle with diameter 20 cm is drawn somewhere on a rectangular piece of paper with length 40 cm and width 30 cm. This paper is kept horizontal on table top and a die, very small in size, is dropped on the rectangular paper without seeing towards it. If the die falls and lands on paper only, find the probability that it will fall and land:  

 inside the circle 

 

 

Solution

Diameter of the circle= 20 

Radius= 10 cm 

Area of circle= `pir^2=22/7xx10xx 10xx=2200/7 cm^2` 

Length of paper =40 cm 

Width of paper =30 cm 

Area of paper=`1200cm^2 ` 

Total possible outccomes=arrea of rectangular paper 

Ssince paper is kept on table top and die falls and land on paper. 

Number of favorable outcomes= are of circle. 

P(inside thhe circle)= `"Area of arde"/"Area of rectangular paper"=(2200/7)/1200=11/42`  

  Is there an error in this question or solution?
Solution A Circle with Diameter 20 Cm is Drawn Somewhere on a Rectangular Piece of Paper with Length 40 Cm and Width 30 Cm. this Paper is Kept Concept: Probability - A Theoretical Approach.
S
View in app×