Hello!

A balloonist lands on a square region 12 m on a side. What's the probability of landing on the X?

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- August 1st 2007, 01:36 PM #1direGuest

- August 1st 2007, 01:44 PM #2

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The probability (making a number of assumptions) is the ratio of the area of

the cross to that of the square.

The area of the cross is the area of the square minus 4 times the area of one

of the triangles.

hence the required prob is:

(144-4*8)/144=7/9

opps.. area of one triangle is 16 not 8 so prob is:

(144-4*16)/144=5/9

RonL

- August 1st 2007, 02:04 PM #3