A clay brick is made in the shape of a rectangular prism with dimensions as shown.
- Calculate the volume of the clay brick. (1 mark)
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Three identical cylindrical holes are made through the brick as shown. Each hole has a radius of 1.4 cm.
- What is the volume of clay remaining in the brick after the holes have been made? (Give your answer to the nearest cubic centimetre.) (3 marks)
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- What percentage of clay is removed by making the holes through the brick? (Give your answer correct to one decimal place.) (1 mark)
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