The surface area, SA of a right circular cone is SA = πr2 + πrs, where r is the radius of the circular cone and s is the slant height. Using rounding to the nearest whole number, which of the following is an estimate of the volume of a cynlinder with a radius of 4.42 meters and a slant height of 2.61 meters?

84 m^2

Step-by-step explanation:

SA = πr^2 + πrs

r = 4.42 rounding to the nearest whole number = 4

s = 2.61 rounding to the nearest whole number = 3

pi = 3.14 rounding to the nearest whole number = 3

SA = 3 * 4^2 + 3 * 4*3

     = 3 *16+ 12*3

     = 48+ 36

     = 84 m^2

b

step-by-step explanation:

given

- 2 (3x + 12y - 5 - 17x - 16y + 4 )

simplify the parenthesis by collecting like terms

= - 2 (- 14x - 4y - 1) ← distribute the parenthesis by - 2

= 28x + 8y + 2 → b

1 is c

2 is a

3 is a

step-by-step explanation: