The distance around a circle is 37.7 meters long. what is the diameter and area of the circle?

Diameter = 12 meters

Area =

Step-by-step explanation:

Given : The distance around a circle is 37.7 meters long.

Also, the distance around the circle is named as circumference of circle .

Circumference of circle is given by :-

Thus , the radius of the circle is 6 meters.

Then, diameter =

Area of circle is given by :-

Hence,  Diameter = 12 meters

Area =

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225