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12 March, 07:46

A shape is made of 12 right triangles of equal size each right triangle has a base of 4cm and a height of 5 cm what is the total area, in a square centimeter, of the shape

A:10

B:60

C:120

D:240

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Answers (2)
  1. 12 March, 07:59
    0
    120 square centimeter. (c)

    Step-by-step explanation:

    Total Area = 12 * area of one triangle [area of right triangle = 1/2 * b * h]

    = 12 * 1/2 * b * h

    = 12 * 1/2 * 4 * 5

    = 120 square centimeter.
  2. 12 March, 07:59
    0
    C:120

    Step-by-step explanation:

    The area of each triangle is A = 1/2 bh

    A = 1/2 (4) * 5

    A = 10 cm^2

    We have 12 triangles

    The total area is 12 times the area of 1 triangle

    total area = 12 * A triangle

    = 12 * 10

    =120 cm^2
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