Glass mosaic

How many dm2 glass is nessesary to produc 97 slides of a regular 6-gon, whose side has length 21 cm? Assume that cutting glass waste is 10%.

Correct answer:

S =  203.7528 dm2

Step-by-step explanation:

q=1+10100=1110=1.1 n=97 a=21 cm dm=21/10  dm=2.1 dm  h=a2(a/2)2=2.12(2.1/2)21.8187 dm  S1=a h2=2.1 1.818721.9096 dm2  S=n q S1=97 1.1 1.9096=203.7528 dm2

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