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2 years ago

50 points please help please explain your answer please ( such as formula n such )

Mathematics

2 answers:

nikdorinn [45]2 years ago

7 0

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.

ch4aika [34]2 years ago

4 0

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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