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Mandarinka [93]
3 years ago
14

Due in 20 mins help pls

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
7 0

Step-by-step explanation:

{13}^{2}  =  {6.5}^{2}  +  {x}^{2}  \\  {x}^{2}  = 126.75 \\ x = 11.2

bearhunter [10]3 years ago
3 0

Answer:

11.3 cm

Step-by-step explanation:

since this is an equilateral triangle it's every sides are equal

side length (a) = 13 cm

formula to calculate the height of equilateral triangle is

h = a *\frac{\sqrt{3} }{2}

=13 * \frac{\sqrt{3} }{2}

=\frac{13\sqrt{3} }{2}

=11.25

=11.3

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