Respuesta :

msm555

Answer:

17cm

Step-by-step explanation:

The formula for the area [tex]\sf (A)[/tex] of a trapezium is given by:

[tex]\sf A = \dfrac{1}{2}h(a + b) [/tex]

where:

  • [tex]\sf h[/tex] is the height of the trapezium,
  • [tex]\sf a[/tex] and [tex]\sf b[/tex] are the lengths of the two parallel sides.

In this case, the area [tex]\sf (A)[/tex] = 34 cm² and the height ([tex]\sf h[/tex]) is 4 cm.

Let [tex]\sf a[/tex] and [tex]\sf b[/tex] represent the lengths of the two parallel sides.

[tex]\sf 34 = \dfrac{1}{2}(4)(a + b) [/tex]

Now, solve for [tex]\sf a + b[/tex]:

[tex]\sf 34 = 2(a + b) [/tex]

[tex]\sf 17 = a + b [/tex]

So, the sum of the parallel sides [tex]\sf (a + b)[/tex] is 17 cm.

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