IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry (id: ea1bb1f23)

本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry，类别为 IB数学

[填空题]
A lawn sprinkler watering a garden z9)f94ut ;6(d qt0i mqbkjw xnl+ tg;fnl * u8;zg-,,3y kbsrmelnz8n sprays at an arc of $140^{\circ}$ with a maximum spray distance of 3.5 metres, as shown in the diagram below.

1.Calculate the area of lawn that is watered by the sprinkler.  $m^2$
2.Calculate the length of the outer arc, where the maximum spray
distance lands.  m

参考答案:
空格1: 15.0±3%  空格2: 8.55±3% 


本题详细解析:

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