Similar Triangles, Shapes & Solids

Interactive macro-enabled MS-Excel spreadsheet. Contents: Find one unknown side on one of two similar scalene triangles. Find two unknown sides & perimeters of similar scalene triangles. Find three unknown sides & areas of similar right-angled triangles. Find one unknown side, perimeters & areas of similar rectangles. Find unknown sides of similar triangles which have parallel sides. Find a trapezium’s perimeter formed by divided similar triangles. Find a cuboid’s volume given a length ratio of two similar cuboids. Find a cylinder’s volume given the lengths of two similar cylinders. Find a border’s dimensions given a % area of a similar rectangle. Find a football’s diameter given a % volume of a similar football. Find a cone’s volume given a fractional height of a similar cone. Find a little bear’s height given a fractional surface area of big bear. Find a moon’s diameter given a disc held cm from my eye hides it.