Question

What are the answers of these questions?Please answer fast.. ​

Answer 1

angle formed by two of the door wings

= $\frac{{360}^{o}}{3} = {120}^{o}$

since the angle is greater than 90° it is an obtuse angle

area of the circular space

= πr²

= π ${(\frac{diameter}{2})}^{2}$

= π ${(\frac{200}{2})}^{2}$

= π (100)²

= 3.14159 (10000)

= 31415.9 cm²

≈ 31400 cm²