Dimensions 23571

The block has the dimensions a = ?, b = 10 m, c = 6.2 m, the surface is 192.04 m2. What is the length of side a?

Correct answer:

a =  2.1 m

Step-by-step explanation:

b=10 m c=6.2 m S=192.04 m2  S=2(ab+bc+ca) S/2=a(b+c)+bc  a=b+cS/2b c=10+6.2192.04/210 6.2=1021=2.1=1021 m=2.1 m   Verifying Solution:  S2=2 (a b+b c+c a)=2 (2.1 10+10 6.2+6.2 2.1)=254801=192.04

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