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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.​

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 50cm^{2}

    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...