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Regarding number 3, suppose the entirety of the length of the big rectangle, including 1,2 and3, being \( x \). Use \( k \) to find the ratio of the lengths, and then calculate the length of each rectangle with x. Then, equalize des areas and isolate for \( x \).

Regarding number 8, find the measurement of \( AC \) with trigonometric identities to afterwards use the \( k \) ratio to find the sides of the triangle. Or, you could directly calculate the area and use \( k^{2} \).

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Explanation from Alloprof

This Explanation was submitted by a member of the Alloprof team.

Hello there !

Regarding number 3, suppose the entirety of the length of the big rectangle, including 1,2 and3, being \( x \). Use \( k \) to find the ratio of the lengths, and then calculate the length of each rectangle with x. Then, equalize des areas and isolate for \( x \).

Regarding number 8, find the measurement of \( AC \) with trigonometric identities to afterwards use the \( k \) ratio to find the sides of the triangle. Or, you could directly calculate the area and use \( k^{2} \).

Thank you for using our services, and feel free to do so in the future !