isabelreneexxx10 isabelreneexxx10

02-02-2020
Mathematics

contestada

A pentagon is made from a square and an isosceles triangle.
Not drawn
accurately
125
12 cm
12 cm
- 12cm
Work out the perimeter of the pentagon.

Respuesta :

andreiaxy00797 andreiaxy00797

01-07-2022

Answer:

55

Step-by-step explanation:

120- 90 = 35˚

35 × 2 = 70

180 - 70 = 110

x/sin35˚= 13/sin110˚ = 7.935cm = 8cm - sin theorem

Perimeter = 8 + 8 + 13 + 13 + 13 = 55cm

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