Find the area and perimeter of the triangle: if the side AC = 58 cm, AD = 42 cm, CD = 79 cm.
| February 19, 2021 | education
P = a + b + c = AC + AD + CD = 58 cm + 42 cm + 79 cm = 179 cm.
Since all three sides of the triangle are known, you can find its area using Heron’s formula:
S = √ (p (p – a) (p – b) (p – c)) = √ (89.5 (89.5 – 58) (89.5 – 42) (89.5 – 79)) ≈ 1185.8 cm2.
Answer: 179 cm; 1185.8 cm2.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
