Greenhouse

Garden plastic greenhouse is shaped half cylinder with a diameter of 6 m and base length 20 m. At least how many m2 of plastic is need to its cover?

Correct result:

x =  216.8 m2

Solution:

x=π⋅(6/2)2+π⋅(6/2)⋅20=216.8 m2x = \pi\cdot (6/2)^2 + \pi\cdot (6/2)\cdot 20 = 216.8 \ \text{m}^2

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