shaniakragt shaniakragt

09-12-2018
Mathematics

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The area of the rectangular slab of foam insulation is 30 square meters. Find the dimensions of the slab.
m (smaller value)
m (larger value)

The area of the rectangular slab of foam insulation is 30 square meters Find the dimensions of the slab m smaller value m larger value class=

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Altherra Altherra

09-12-2018

(2w+4)*w = 30
2w^2 +4w -30 =0
solve quadratic equation:

w=3 or w=-5 (rejected as it is negative)

smaller: 3
larger: 3*2+4 = 10

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