50 points please help
please explain your answer please ( such as formula n such )
2 answers:
Answer:
(a) The length is 85 m.
(b) The width is 89 cm.
Step-by-step explanation:
(a)
Perimeter (P) formula using the length (L) and width (W) of a rectangle.
P = 2L + 2W
P = 278 m
W = 54 m
278 = 2L + 2(54)
2L + 108 = 278
2L = 170
L = 85
Answer: The length is 85 m.
(b)
Area (A) formula using the length (L) and width (W) of a rectangle.
A = LW
A = 8811 cm²
L = 99 cm
8811 = 99 × W
W = 8811/99
W = 89
Answer: The width is 89 cm.
Answer:
See below ~
Step-by-step explanation:
Part (a) :
- Formula : Perimeter = 2 (Length + Width)
- ⇒ 278 = 2(54 + Length)
- ⇒ 139 = 54 + Length
- Length = 139 - 54 = 85 m
Part (b) :
- Formula : Area = Length × Width
- ⇒ 8811 = 99 x Width
- ⇒ Width = 8811/99
- Width = 89 cm
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