77%
Calculate the area of this triangle.
14 cm
11 cmi
18 cm

A = 99 cm²

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 = 18 and h = 11 , then

A = × 18 × 11 = 9 × 11 = 99 cm²

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i