Question

Due in 20 mins help pls

Answer 1

11.3 cm

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 *(√(3) )/(2)`

=
`13 * (√(3) )/(2)`

=
`(13√(3) )/(2)`

=11.25

=11.3

Answer 2

Explanation:

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