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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

Example 11* (Optional) A missing helicopter is reported to have crashed somewhere in the rectangular region shown in Fig. 15.2. What is the probability that it crashed inside the lake shown in the figureHere, we use area to find probability First, let us find length and height of the lake Length of lake = 9 – 6 = 3 km Breadth of lake = 4.5 – 2 = 2.5 km Now, Area of lake = 3 km × 2.5 km Total Area = 4.5 km × 9 km Now, P (helicopter will fall in lake) = (𝑨𝒓𝒆𝒂 𝒐𝒇 𝒍𝒂𝒌𝒆)/(𝑻𝒐𝒕𝒂𝒍 𝑨𝒓𝒆𝒂) = (3 × 2.5)/(4.5 × 9) = (3 × 25)/(45 × 9) = (1 × 25)/(45 × 3) = (1 × 5)/(9 × 3) = 5/27 So, Probability is 𝟓/𝟐𝟕

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.