Answer:
Lateral surface area = 360 cm²
Step-by-step explanation:
Given:
Dimension of small rectangle = (12 cm by 10 cm)
Find:
Lateral surface area
Computation:
Length =√9² + 12²
Length = √81 + 144
Length = 15 cm
Dimension of big rectangle = (15 cm by 10 cm)
Lateral surface area = Area of small rectangle + Area of big rectangle + Area of slop rectangle
Lateral surface area = (L1 x B1) + (L x B) + (l x b)
Lateral surface area = (12 x 10) + (15 x 10) + (10)(9)
Lateral surface area = 120 cm² + 150 cm² + 90 cm²
Lateral surface area = 360 cm²
