Half of the circle is an arc
Mark out 10 by 36 degree arcs around its circumference and then join them up to the center of the circle.
Yes it is, two radii make up the dimater of a circle. :)
two circles and arectangle
Two circles, a square, and one stone in the center.
The circumference of a circle divided by its diameter is equal to pi.
The area of the square is 14 x 14 ie 196 sq cm. The four arcs make up a circle radius 7 cm so total area of arcs is 49 pi sq cm. Subtracting: 196 - (49 x 3.1415) gives 42-and-a-whisker sq cm as the area of the central shape.
a half circle and a circle
the older crust is subducted and later pushed up to form oceanic arcs
circle and a curved surface
360
Eight of them.
scrunch it up in a circle and then make a rectangle and then stick it together