Geoboard Problem #1 Posted on March 20, 2015 by solvemymaths What is the area of the blue quadrilateral? *It is standard to assume geoboards have pegs 1cm apart Share this:TwitterFacebookLike this:Like Loading... Related

Having seen the answer, never have I been so excited to see root 17 pop up in my calculations ðŸ™‚ Reply

I got 899/136 = 6.61… 9/8 + 9/2 + 1/2 + 1/2 – 1/68 (the 1/68 being the tiny bit of triangle that sticks out 3/4 the way down on the left) Reply

Is it 6.62 to 2dp?

I got 225/34.

is it 225/34 cm^2??

This feels like it should be easy and yet it is causing me a headache ðŸ™‚

Yes, it is 225 / 34 = 6.62 to 2 dp

Having seen the answer, never have I been so excited to see root 17 pop up in my calculations ðŸ™‚

I got 899/136 = 6.61…

9/8 + 9/2 + 1/2 + 1/2 – 1/68 (the 1/68 being the tiny bit of triangle that sticks out 3/4 the way down on the left)

I also got 225/34:

4×4 – 1/2x3x3 – 1/2x1x4 x2 – 1/2×0,5×4 + 2/17 =225/34

Pick’s theorem!!! ðŸ˜€

I’m not sure that helps here