Pls help find the area

18 mi²

Step-by-step explanation:

Using the formula:

A=36/2

A=18

Units will be mi² since it is area

A = 18 mi²

Step-by-step explanation:

the area (A) of a triangle is calculated as

A = bh ( b is the base and h the perpendicular height )

here b = 8 and h = 4.5 , then

A = × 8 × 4.5 = 4 × 4.5 = 18 mi²

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft