Answer: 94 and 60, 96 and 42
Step-by-step explanation:
1. For surface area, you need to find the area the sides and base.
Base: 3*4= 12
Side 1: 4*5= 20
Side 2: 3*5= 15
Multiply each by 2.
12*2= 24
20*2= 40
15*2= 30
Add them up.
30+40+24= 94 is the surface area.
For the volume, you multiply each given number.
3*4*5
length * width * height = volume
60 is the volume.
2. For surface area, you need to find the area the sides and base. This is a triangular prisim so the formula is differrent.
Base: 3*7= 21
Side 1: (area of a triangle is 1/2bh) 3*4= 12 / 2= 6
Side 2: (area of a triangle is 1/2bh) 3*4= 12/2= 6
Side 3 (the back): 4*7= 28
Side 4 (the shaded): 5*7= 35
Add them up. This isn't a rectangular prisim so we aren't multiplying the found areas again, in the triangula rpriism we already found ALL areas.
21+6+6+28+35
= 96 is the surface area.
For the volume, you multiply each given number. You follow for triangles,
1/2 BAH
7*4*3=84
84/2
= 42 is the volume.
