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BDMO REGIONAL 2017

Posted: Thu Dec 14, 2017 7:05 pm
by mathlover007
In a diagram, two surfaces are partially
superimposed in each other. The perimeter of one
surface is 201 units and the area is 201 square units.
The perimeter of the other surface is 710 units and
the area is 710 square units.
What is the difference of the area of the two surfaces
that is not black shaded, i.e., common between two?

Re: BDMO REGIONAL 2017

Posted: Thu Feb 22, 2018 12:20 pm
by samiul_samin
The diagram is given below:
Screenshot_2018-02-22-12-18-09-1-1.png
This is Comilla Regional Primary Problem 9.

Re: BDMO REGIONAL 2017

Posted: Thu Jan 10, 2019 12:00 pm
by samiul_samin
samiul_samin wrote:
Thu Feb 22, 2018 12:20 pm
The diagram is given below:Screenshot_2018-02-22-12-18-09-1-1.png
This is Comilla Regional Primary Problem 9.
Where has the diagram gone?

Re: BDMO REGIONAL 2017

Posted: Mon Feb 18, 2019 1:26 pm
by samiul_samin
samiul_samin wrote:
Thu Feb 22, 2018 12:20 pm
The diagram is given below:Screenshot_2018-02-22-12-18-09-1-1.png
This is Comilla Regional Primary Problem 9.
Screenshot_2019-02-17-08-20-43-1-1.png
Screenshot_2019-02-17-08-20-43-1-1.png (16.9 KiB) Viewed 5111 times
Answer $=710-201=509$