Can anyone help???

Step-by-step explanation:

Surface area is the total surface.  So first, find each surface...two triangles, same size and three rectangles, same size.  

So you will have to add eachtriangle+triangle+rectangle+rectangle+rectangle.

Area of a triangle = 1/2(b)(h)               with b=base and h=height

Plug in knowns         1/2(15)(13)=A

Multiply 15X13=195  Then divide by 2.  195/2=97.5  

The area of each triangle is 97.5 yd.

Area of a rectangle = (L)(W)                  with L=Length and W=Width

Plug in knowns          (15)(24)=A             Now, multiply

15X24=360

The area of each rectangle is 360 yd.  

We need to add two triangles for front and back. and three rectangls.

97.5+97.5+360+360+360=1275

Surface area is 1,275 yd.

rectangular prism would best match the box of cards

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s