Help plz worth 12 points

4. 0.957 square meters

5. 4 cm

Step-by-step explanation:

4. l*w=area

1.2*2.4=2.88

2.88=pi*r^2

0.917=r^2

0.957=r

5. diameters have to be 8cm for three to touch to get to 24cm, because 8*3=24.

radius=1/2 diameter, so radius=4cm

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is