The formula for the area of a sector in radians is

, where theta is the angle in radians. For us, the formula looks like this:

. Doing all the multiplication on that gives us

. Multiplying in pi and rounding to the nearest tenth gives us an area of 76.3 meters squared. You can use the formula for the area of a sector with the angle in degrees as well. Just replace the 360 degrees with 2pi and it works the exact same way.
Answer:
Bushes cost $28
Step-by-step explanation:
WE have:-
4*63 + 13b = 616 where b = cost of one bush.
252 + 13b = 616
13b = 616 - 252 = 364
b = 364/13
b = 28 (answer)
4/5/8/87/7/9 is the answer