find the area of a regular pentagon whose each side is 10 cm long and the radius of whose circumscribed circle is 8.5 cm
Answers
Answered by
5
Answer:
Step-by-step explanation:
Area of the pentagon = {n/2 × a × √(R² - a²/4) square units
= {5/2 × 8 × √(7² - 64/4)} cm²
= {20 × √(49 - 16)} cm²
= (20 × √33) cm²
= (20 × 5.74) cm²
= (114.8) cm².
Read more on Brainly.in - https://brainly.in/question/7592848#readmore
Similar questions