What is the circumference of a circle with area 49Pi? Round to the nearest tenth.

15.6=C

Step-by-step explanation:

Area is equal to pi times radius squared. Circumference is equal to 2 times pi times radius. Divide area by pi and then take the square root of that number.

its the fourth option

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,