Marta is making two different charms for necklace . one charm has a 1 cm diameter and a 3.14 centimeter circumference. a similar charm has a diameter of 4 cm. what is the circumference?

the length of a circumference is  2pi*r , you have the diameter 0f 4 cm and it radio is 4 /2 = 2 cm

now l= 2*pi*2= 12,5664 cm,it is the length of the circumference

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40