Njoki planted trees at intervals of 22m apart on the diagonal of a rectangular plot of land that measures 48m by 20m . How many trees did h

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Njoki planted trees at intervals of 22m apart on the diagonal of a rectangular plot of land that measures 48m by 20m . How many trees did he plant

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Physics RI SƠ 4 years 2021-08-27T10:41:10+00:00 2021-08-27T10:41:10+00:00 1 Answers 18 views 0

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Captcha* Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )

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phucdien · Answer 1 · 2021-08-27T10:43:08+00:00

Answer:

Explanation:

the diagonal of the rectangular plot of land can be found using Pythagoras theorem (the diagonal is the hypotenuse)

Given

length of land x= 48m

width of land y= 20m

digonal z= ?

$z^2= x^2+y^2\\\\z=\sqrt{ x^2+y^2} \\$

substituting the values of x and y into the equation we can solve for z

$z=\sqrt{ 48^2+20^2} \\\\z=\sqrt{ 2304+400} \\z=\sqrt{ 2704} \\z=52m\\$

The diagonal is 52m

Hence since the interval = 22m the number if treee is

$\frac{52}{22} = 2.36\\$

The number of trees must be whole numbers , the number of tree is 2