1. What is the lateral surface area of a solid 8 meters high whose base is the figure at right? Dimensions are in meters.
2. Which inequality corresponds to the graph at right?

Step-by-step explanation:

To calculate the lateral surface of this shape we must divide it into 3 parts :

We must calculate its perimeter P1 :

P1 = (15*2)*π/2 = 30*π*(1/2)=15π

We must calculate its perimeter P2:

P2= (7*2)*π/2=14*π*(1/2)= 7π

We won't calculate its perimeter because it has some common sides with the cylinders .

Let P3 be the perimeter of what's remaining from the cube

P3=12+5= 17

Now the total perimeter : Pt

Pt= 15π+7π+17= 22π+17

The lateral surface : Ls

Ls= (22π+29)*8= 784.92 m²

b

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.