a.

$$48 \mathrm{~m}^{2}$$.

b.

$$5 \sqrt{80} \mathrm{~m}^{2}$$.

c.

$$64 \mathrm{~m}^{2}$$.

d.

$$8 \sqrt{10} \mathrm{~m}^{2}$$.

e.

$$80 \mathrm{~m}^{2}$$.

Answer sheet:

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