The area of the rectangular base, triangular base, lateral surface area of rectangular, and total surface area are 120 cm², 45 cm², 720 cm², and 1125 cm² respectively.
What is a prism?
A prism is a closed solid that has two parallel bases connected by a rectangle surface.
The area of the base of the rectangular prism will be
Area of rectangular base = 12 × 10
Area of rectangular base = 120 cm²
The area of each triangular base of the triangular prism will be
Area of triangular base = 0.5 × 10 × 9
Area of triangular base = 45 cm²
The lateral area of the rectangular prism will be
Lateral area of rectangular = 2 (12 × 10 + 12 × 20)
Lateral area of rectangular = 720 cm²
The total surface area of the paperweight will be
Total surface area = 2 (45 + 120) + 2 (240 + 100) + 200
Total surface area = 285 + 840 + 20
Total surface area = 1210 cm²
More about the prism link is given below.
https://brainly.com/question/12649592
