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A certain type of washing machine is 95cm high, 54cm long at the bottom and 50cm wide. How much cloth does it need to make a cloth cover for the washing machine?
54 × 50 + 54 × 95 × 2 + 50 × 95 × 2, = 2700 + 10260 + 9500, = 22460 (square centimeter); answer: need at least 22460 square centimeter cloth
A washing machine is 95cm high, 54cm long and 50cm wide. To make a cloth cover for the washing machine, at least how much cloth is needed?
Make a cloth cover for the washing machine, not the bottom
（95×54+95×50）×2+54×50
=19760+2700
=22460 (square centimeter)
=2.246 (M2)
A: it needs at least 2.246 square meters of cloth
The height of a certain type of washing machine is 95cm, the bottom surface is 50cm long and 40cm wide. How much cloth does it need to make a cloth cover for the washing machine? If the cloth per square decimeter costs 0.1 yuan, how much does it cost to make such a cloth cover?
Make a cloth cover for the washing machine. Don't calculate the bottom area of the cuboid
50×40 +50×95×2 +40×95×2
=200 +9500 +7600
=17300 (square centimeter)
=173 (square decimeter)
173 × 0.1 = 17.3 yuan
A: at least 173 square decimeters of cloth is needed. If the cloth costs 0.1 yuan per square decimeter, it costs 17.3 yuan to make such a cloth cover
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