math

5.
Find the length of the hypotenuse of a right triangle with legs of 20 cm and 21 cm.

41 cm
841 cm
6 cm
29 cm

6.
The length of the hypotenuse of a right triangle is 15 cm. The length of one leg is 9 cm. Find the length of the other leg.

6 cm
12 cm
17 cm
144 cm

7.
If the sail of a ship is 10 feet long and has a diagonal length of 26 feet, what is the height of the sail in feet?

29
24
17
8

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  1. all of these can be found using

    a^2 + b^2 = c^2

    where a and b are the legs, c the hypotenuse.

    #7:
    10^2 + b^2 = 26^2
    b = 24

    do the rest the same way, plugging two of the needed values.

    if you get stuck, come on back and show how far you got.

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