find the area of a regular hexagon with a side length of 8cm. Round to the nearest tenth.(high reward)

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

X+ y = 5 ; x - y =3 solve using linear combination

What is the volume of a cone with a height of 6 cm in the radius of 2 cm