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# The area of rectangle varies jointly as the length l and the width w and a=180cm when l=9cm and w=5cm. find the area of a rectangle whose length is 20 cm and whose width is 5 cm.​

• Réponse publiée par: kurtiee

1) 6x2 = 12

12/2 = 6

heightxbase / 2

2) 5x3 = 15

length x width

3)  need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area

• Réponse publiée par: shannel99

2. a. 49cm²

3. d. 63cm²

7. c or d. 81cm²

That's all I can do, I don't quite understand other question.

• Réponse publiée par: kuanjunjunkuan

A. Perimeters

1. A square with side of 4cm

P = 4s

P = 16 cm

2. A parallelogram with a length of 7cm and a width of 8cm

P = 2(l + w)

P = 2(7 + 8)

P = 30 cm

B. Area of Squares

1. side = 5 cm

A = s²

A = (5)²

A = 25 cm²

2. side = 12 mm

A = s²

A = (12)²

A = 144 mm²

C. Area of Rectangles

1. length = 9 cm, width = 7 cm

A = lw

A = (9)(7)

A = 63 cm²

2. length = 8 cm, width = 5 cm

A = lw

A = (8)(5)

A = 40 cm²

D. Area of Parallelograms

1. b = 12cm, a = 6cm

A = ab

A = (6)(12)

A = 72 cm²

2. b = 6cm, a = 11cm

A = ab

A = (11)(6)

A = 66 cm²

E. Area of Triangles

1. b = 8m, a = 4m

A = (ab)/2

A = (4·8)/2

A = 16 m²

2. b = 14m, a = 6m

A = (ab)/2

A = (6·14)/2

A = 42 m²

• Réponse publiée par: tayis

A

D

C

A

B

Step-by-step explanation:

basta, tama 'yan magtiwala ka lang.

• Réponse publiée par: snow01

where is the figure below the number 1

Step-by-step explanation:

thanks

hope you understand

• Réponse publiée par: saintjohn

Width: X = 5cm

Length: x+5 = 10cm

Perimeter = 30cm

Step-by-step explanation:

10 is more than 5. Also 10 x 5 is 50 Perimeter

P = 2(l + w)

P = 2(10 + 5)

P = 2(15)

P = 30

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The area of rectangle varies jointly as the length l and the width w and a=180cm when l=9cm and w=5c...