Question

Find the area of a triangle whose sides are 18cm, 24cm and 30cm.​

Answer 1

Answer:

Find the semi-perimeter:

p = (18 + 24 + 30) - 2 = 36 cm

Find the area of the triangle:

area = √p(p-a)(p-b)(p-c)

area = √36(36 - 18)(36 - 24)(26 - 30)

area = √46656

area = 216 cm²

Find the length of the altitude corresponding to the smallest side:

area = 1/2 (base) (height)

216 = 1/2 (18) (height)

216 = 9 height

height = 216 - 9 = 24 cm

Answer: The area is 216 cm² and the corresponding height is 24 cm

Answer 2

Answer:

25855855cm

Step-by-step explanation:

Hope it helps :))