MATHEMATICAL SKILLS AREA OF A SQUARE AND ASSOCIATED EXAMINATION QUESTIONS. DESIGN AND TECHNOLOGY
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1 MATHEMATICAL SKILLS AREA OF A SQUARE AND ASSOCIATED EXAMINATION QUESTIONS DESIGN AND TECHNOLOGY NOT FOR SALE OR REDISTRIBUTION THIS MATERIAL CANNOT BE EDITED OR PLACED ON ANY OTHER FORM OF MEDIA, INCLUDING POWERPOINTS, INTRANETS, WEBSITES ETC...
2 CALCULATING THE AREA OF A SQUARE Definition: A square has four sides, with each being equal in length. Each of the four internal angles are right angles, 90 degrees. FORMULA OR X = X multiplied by X X IS THE LENGTH OF ONE SIDE REMEMBER, WITH A SQUARE, EACH SIDE IS THE SAME LENGTH X SAMPLE QUESTIONS The length of one side is 100mm AREA = 100mm x 100mm AREA = 10000mm² 100mm The length of one side is 50mm AREA = 50mm x 50mm AREA = 2500mm² 50mm
3 SAMPLE QUESTIONS The length of one side is 90mm AREA = 90mm x 90mm 90mm AREA = 8100mm² The length of one side is 70mm AREA = 70mm x 70mm 70mm AREA = 4900mm² The length of one side is 80mm AREA = 80mm x 80mm 80mm AREA = 6400mm² The length of one side is 60mm AREA = 60mm x 60mm 60mm AREA = 3600mm²
4 CALCULATING THE AREA OF A SQUARE Definition: A square has four sides, with each being equal in length. Each of the four internal angles are right angles, 90 degrees. FORMULA OR X = X multiplied by X X IS THE LENGTH OF ONE SIDE REMEMBER, WITH A SQUARE, EACH SIDE IS THE SAME LENGTH X SAMPLE QUESTIONS The length of one side is 100mm 100mm The length of one side is 50mm 50mm
5 SAMPLE QUESTIONS The length of one side is 90mm 90mm The length of one side is 70mm 70mm The length of one side is 80mm 80mm The length of one side is 60mm 60mm
6 AREA OF A SQUARE - EXAMINATION QUESTION A plywood panel for a cabinet is seen below. 1. Calculate the area of the plywood required, before it is cut to shape (the overall square of plywood required, before it is cut to an L shape). 250mm 500mm 250mm 2. Calculate the area of the final L shape. 500mm First, calculate the area of the uncut plywood, by treating it as a square 500mm x 500mm. AREA = LENGTH OF SIDE X LENGTH OF SIDE AREA = 500 X 500 AREA = mm² Now, calculate the area of the smaller piece to be cut away, during the shaping of the panel AREA = LENGTH OF SIDE X LENGTH OF SIDE AREA = 250 X 250 AREA = 62500mm² Now subtract the smaller area from the area of the uncut plywood = AREA OF FINAL SHAPED PIECE IS mm²
7 AREA OF A SQUARE - EXAMINATION QUESTION A plywood panel for a cabinet is seen below. 1. Calculate the area of the plywood required, before it is cut to shape (the overall square of plywood required, before it is cut to an L shape). 250mm 500mm 250mm 2. Calculate the area of the final L shape. 500mm
8 AREA OF A SQUARE - EXAMINATION QUESTION An acrylic window for a school project seen below, is composed of two pieces, accurately cut to size on a laser cutter. They fit perfectly together. 1. Calculate the area of piece A 2. Calculate the area of piece. B 200mm B 200mm 400mm A 400mm First, calculate the entire area of A, without the centre piece being removed, by treating it as a square 400mm x 400mm. AREA = LENGTH OF SIDE X LENGTH OF SIDE AREA = 400 X 400 AREA = mm² Now, calculate the area of the smaller piece B, which is also the size of the piece to be removed from A. AREA = LENGTH OF SIDE X LENGTH OF SIDE AREA = 200 X 200 AREA = 40000mm² Now subtract the smaller area B from the area of A. The answer will be the area of A with it s central window of material removed = mm² AREA OF FINAL SHAPED PIECE A WITHOUT CENTRAL PIECE IS mm² AREA OF PIECE B IS 40000mm²
9 AREA OF A SQUARE - EXAMINATION QUESTION An acrylic window for a school project seen below, is composed of two pieces, accurately cut to size on a laser cutter. They fit perfectly together. 1. Calculate the area of piece A 2. Calculate the area of piece. B 200mm B 200mm 400mm A 400mm
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