Question

PLEASE HELP!!! I NEED TO KNOW HOW TO SOLVE IT

Answer 1

#a

• Triangular prism

#b

If sides be L,B,H

Then

• TSA=BH+L(Perimeter of base)

#c

Now

• TSA=4(3)+11(3+5+4)
• TSA=12+11(12)
• TSA=144cm²

Answer 2

Name of the shape:

• Triangular Prism - a three sided prism "triangular base"

Surface Area of Right Triangular Prism:

⇒ Base x Height + Length(perimeter of the base)

• 4 x 3 + 11(3 + 5 + 4)

• 12 + 11(12)

• 12 + 132

• 144 cm²

There surface area of this shape is 144 cm²