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 KCSE Mathematics Paper 1 Revision Questions and Answers Set 7

A rectangular cabin measuring 6.5m long , 4.8m wide and 3m high is constructed using wooden planks. The cabin has two door each measuring 2.0m by 1.02m and four windows each measuring 90cm by 60cm. Each wooden plank measures 1.8m by 15 cm and costs sh 45.50. apart from doors and window. All
the walls, the floor and the ceiling are covered with the wooden planks
Calculate:
a)the total area covered with planks
b)the number of planks used
c)the cost of the planks used to construct the cabin

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