Answer:
172cm^2
Step-by-step explanation:
Surface Area of Triangles;
A=B x H / 2
=(4x3) /2
= 6cm
Multiply 6 by 2 since there are two triangles at both ends
6 x 2 =12cm^2
Surface area of the rectangles;
A=LW
=10x5
=50cm
Multiply by three since there are three triangles
50cm x 3 = 150cm^2
Add everything both total triangle and rectangle surface areas together
A= 12 + 150
=172cm^2
