Find the surface area of the cone

Step-by-step explanation:

slant height l =√(20²+(9/2)²)=√(400+81/4)=√(1681/4)=41/2

slant surface area=πrl

base area=πr²

Total surface area=πr²+πrl=πr(r+l)=π×(9/2)(9/2+41/2)=π×(9/2)×50/2=225π/2

=225×3.14/2

=225×1.57

=353.25 mm²

$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

idk

step-by-step explanation: