Before a sports hall is two equally large rectangular lawns, each measuring 40 m and 12 m. Maintenance of 10m² lawn costs 45 CZK yearly. On each lawn is a circular flowerbed with a diameter of 8 meters. How much money is needed each year to take on lawn care? Result round to the nearest CZK crown.

Correct answer:

x =  3868 Kc

Step-by-step explanation:

a=40 m b=12 m n=2  c=45/10=29=4.5 Kc/m2 D=8 m r=D/2=8/2=4 m  S=a bπ r2=40 123.1416 42429.7345 m2  x=n c S=2 4.5 429.7345=3868 Kc

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