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.​

Answers

• 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