Creating a 90 degree curve - Newbie needs help

[lesshep]

hi guys

i have some 200mmx60mm blocks left from my driveway and would like to create a semi circular border for my garden,the circle would be going between a straight back and side wall,geometry not being my strong suit at school and also being a bit thickheaded im stuck,i only have 37 blocks so was going to stand them on their sides but i would like them to knit together without any gaps so if anyone could help out with the angles of cut it would be much appreciated,also what would be the best way to cut them and with what.
Many thanks {hopefully} and keep up the good work

[lesshep]

oh and by the way i was hoping to come out from the back and side walls about 2 metres

[Tony McC]

So: is this a semi-circle or a quarter circle?

[lesshep]

sorry tony, its a quarter circle

[Tony McC]

With only 37 blocks, you've not enough to lay them 'on edge', but laying them the usual way will look fine: there's just an 11mm gap between full blocks at the outside edge....

[lesshep]

thanks very much tony for your reply,much appreciated and will give it a go