Answer:
666
Step-by-step explanation:
surface area of triangle:
1/2 mm x 10mm x 12mm
=60mm²
60mm² x 2 = 120mm²
surface area of rectangle:
13mm x 14mm
= 182mm²
182 mm² x 3
= 546mm²
total surface area:
120mm² + 546mm²
=666mm²
