A solid rectangular block has a square base of side $x$ cm and height of $y$ cm. The total surfa

Question

A solid rectangular block has a square base of side $x$ cm and height of $y$ cm. The total surface area of the rectangular block is $90$ cm$^{2}$ and the total length of the $12$ edges is $48$ cm. Show that ${{x}^{2}}-8x+15=0$ and find the possible values of $x$ and of $y$.

Accepted Answer

$(x,y)=(5,2)$ or $(3,6)$

Polynomials, Cubic Equations and Partial Fractions - Linear and Non-Linear Simultaneous Equations

Polynomials, Cubic Equations and Partial Fractions - Linear and Non-Linear Simultaneous Equations

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