IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry (id: feff45bb8)

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]
In a school playgroun:( -p,)zrwtyuzt kn 2i*am -gad,w9+9 bpo yi:j;fa(cwm the grass is watered by lawn sprinklers that are set to spray at an arc ofm w:y9cp9+oa ib;f(jw $220^{\circ}$ with a maximum spray distance of 55 metres, as shown in the diagram below.


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

参考答案:
空格1: 48.0±3%  空格2: 19.2±3% 


本题详细解析:

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