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Surface areas and nets
Can you find the area of the nets of these shapes? You can unfold the net by dragging down the slider. Click and drag the grid to rotate your view. Shift+click and drag to pan the view.
Surface area of cuboids, prisms and pyramids
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Interactive GeoGebra activity
Choose a cuboid, triangular prism or square-based pyramid. Change its dimensions to see if you can work out its surface area. Tick the boxes to highlight particular faces and to show the correct surface area.