# Re: Ho?i ve^` toa'n

Ti'nh nhanh nhu+ng sai, ddu+o+.c ddi.p dde^? con cho'
da.i ra su?a.

Ca'i na`y go.i la` LO'C CHO'C ddo', hie^?u chu+?a????

On Apr 6, 6:10 pm, Mai Dao <maida...@xxxxxxxxx> wrote:
On Apr 6, 5:01 pm, Mai Dao <maida...@xxxxxxxxx> wrote:

On Apr 6, 4:27 pm, OngLaido <hondu...@xxxxxxxxx> wrote:

Thu+a qu'i vi.,

To^'i qua co^ con ga'i u't ddu+a to^i ba`i toa'n nhu+ the^' na^`y nho
+` gia?i giu`m. To^i ngo.ng luo^n. To^i nghi~ la` ba`i na^`y khg ddu?
data dde^? gia?i.

Nho+` qu'i vi. gia?i cho:

The city part department is planning an enclosed rectangular
playground in a new park. One side of the ground will be agianst an
existing building, so no fence is needed there. Find the dimensions of
the maximum area that can be made with 900 meters of fence. What is
the maximum area.

Tha^n ki'nh

Toa'n lo+'p ma^'y. Chu+' da^n ho.c Calculus ro^`i thi` pha?i bie^'t
ngay ddo' la` hi`nh vuo^ng va` mo^~i ca.nh 300 meters.

Tui nho+' la` hi`nh vuo^ng co' die^.n ti'ch lo+'n nha^'t ne^'u
constant chu vi. Nhu+ng tru+o+`ng ho+.p na`y kho^ng ddu'ng vi` 1 ca.nh
kho^ng du`ng. Ti'nh nhanh nhu+ng sai, ddu+o+.c ddi.p dde^? con cho'
da.i ra su?a.

Bi`nh thu+o+`ng, Tui kho^ng muo^'n ma^'t tho+`i gio+` dde^? ddo^i co vo
+'i loa`i cho', Nhu+ng cho' da.i thi` chi? cho+` di.p dde^? ma^'t
da.y. Cha'n.

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