Mathematics
In the figure, four faces of the solid are shaded. The shaded area is :
100 cm2
150 cm2
200 cm2
300 cm2
Mensuration
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Answer
Given,
Total height = 10 cm
Inner vertical step height = 6 cm
So lower height = 10 - 6 = 4 cm
Total front width = 10 cm
Top block width = 5 cm
Bottom block width = 5 cm.
Calculating the area of top face of the tall block,
Area of rectangle = length × breadth
= 5 × 10 = 50 cm2.
Calculating the area of top face of the lower block,
Area of rectangle = 5 × 10 = 50 cm2.
Calculating the vertical inner face (step)
Length = 6 cm
Breadth = 10 cm
Area = 6 × 10 = 60 cm2.
Calculating the area of bottom side outer face,
Length = 10 cm
Breadth = 4 cm
Area = 4 × 10 = 40 cm2.
Total shaded area = 50 + 50 + 60 + 40
= 200 cm2.
Hence, option 3 is the correct option.
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