g.uk/courses/37010/files/13546023?module_ite... Topic review: Surface area Download 235 review topics.pdf (704 KB) 1 8.5 QA The diagram gives the dimensions of an open-topped waste skip. 27cm A ✩ Find the area of metal used to make the waste skip. Area of a trapezium with parallel sides a and b h(a+b) and height h = D 20cm CD & 72 cmn 36cm 2 The diagram shows a plinth in the shape of a prism with a trapezium cross-section. Calculate the surface area of the plinth. Give your answer in square metres. 250cm @ 2/am 3 2.1m Hint 4 1.4m 1.2m 1.5m Change all dimensions to metres before finding areas.

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