given that : the terms triangle , square and circle all refer to geometrically regular shapes ( refer to diagram ) each corner of fort behold , and therefore the outer limit of the island lie ( s ) exactly between the mid-points of the sides of triangle square and its centre pi = 3.142 triangle sqare occupies 1/400 or 0.25 % of the area of castle hawthorn answers are to be given to the nearest metre or square metre determine the following : ( km 6.6 ) the area of castle hawthorn ( km 5.5 ) the area of fort behold ( km 5.6 ) the circumference of the island the square in the circle at triangle square click ok to print diagram the square in the circle at triangle square enter correct combinations { } { } { } to proceed to stage 2 bob pressed ok on the handset , and a sheet of printed paper emerged from a slot below the tv screen .