BDMO REGIONAL 2017

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mathlover007
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BDMO REGIONAL 2017

Unread post by mathlover007 » Thu Dec 14, 2017 7:05 pm

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?

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samiul_samin
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Re: BDMO REGIONAL 2017

Unread post by samiul_samin » 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.

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samiul_samin
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Re: BDMO REGIONAL 2017

Unread post by samiul_samin » Thu Jan 10, 2019 12:00 pm

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?

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samiul_samin
Posts: 999
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Re: BDMO REGIONAL 2017

Unread post by samiul_samin » Mon Feb 18, 2019 1:26 pm

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 369 times
Answer $=710-201=509$

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