Chris made a solid by joining two identical rectangular prisms as picture below. The overall dimensions of the composite solid a
re 20 centimeters (cm) by 18 centimeters by 15 centimeters.
What is the surface area in square centimeters, of a single prism?
DON’T ANSWER IF YOU DON’T KNOW THE ANSWER. Whoever answers correctly will get Brainliest.
What is the surface area in square centimeters, of a single prism?
DON’T ANSWER IF YOU DON’T KNOW THE ANSWER. Whoever answers correctly will get Brainliest.
1 answer:
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You're trying to find constants 
such that 
. Equivalently, you're looking for the least-square solution to the following matrix equation.
To solve
, multiply both sides by the transpose of 
, which introduces an invertible square matrix on the LHS.
Computing this, you'd find that
which means the first choice is correct.
To solve
Computing this, you'd find that
which means the first choice is correct.