-8-6(1+7a)=32+4a -8-6-42=32+4a-42

-8-6-46a=32

-14-46a=32

+14 +14

-46a=46

-46=46
a=-1

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?