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Answer the questions below.
(a) The perimeter of a rectangular garden is 306 m.
If the width of the garden is 68 m, what is its length?
Length of the garden: Om
(b) The area of a rectangular window is 5124 cm?.
If the length of the window is 84 cm, what is its width?
Width of the window: cn
cm
X

Sagot :

Answer:

(a) 85m

(b) 61cm

Step-by-step explanation:

(a) We know that the formula for the perimeter of a rectangle is [tex]2(a+b)[/tex], where a is the length and b is the width, or vice versa. So for this garden, [tex]2(a+68)=306\\a+68=153\\a=85[/tex](m)

(b) We know that the formula for the area of a rectangle is [tex]L*W[/tex], where L is the length and W is the width. Note that these values are interchangeable, e.g. 2*3=3*2=6. So for this window,

[tex]84*W=5124\\W=61[/tex](cm)

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