Geometric disaster

Geometry Level 3

Find the area of the red region. Give your answer to the nearest integer.


The answer is 21.

Jonathan Tse by Jonathan Tse , 20, Hong Kong

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1 solution

Jonathan Tse
Aug 24, 2019

20*10/2= Area of triangle

Pi*(5^2)=Area of circle formed

100-25*Pi=21.460...

21.4=21

0 Helpful 1 Interesting 0 Brilliant 0 Confused

Can you find the area of the red region? (If needed, round your answer to the nearest single digit) (e.g. 68.645 = 69).

The correct answer to your question: "Can you find the area of the red region?" is either "Yes" or "No". Both are correct depending who answers it. And the answer is not 21, which is required. Also 21 is two digits and not single digit.

Chew-Seong Cheong - 1 year, 9 months ago

I have amended the wording of the problem for you.

Chew-Seong Cheong - 1 year, 9 months ago

The last step should be 21.4 ≈ 21 21.4 \approx 21 . You can write in LaTeX.

Edward Christian - 1 year, 9 months ago

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