1. What is the total surface area of square prism, whose side length of the square base is 3m and height is 4m?
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Correct answer is option - 4
Explanation:
A square prism has 2 square bases and its total surface area is sum of every surface.
Surface of square prism = 2s^{2} + 4* s* h where s = side length and h = height.
So surface area = (2* 9) + (4* 3* 4) = 18 + 48 = 66m^{2}.
2. What is the total surface area of a rectangular prism whose length is 4m, width is 1m and height is 5m?
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Correct answer is option - 3
Explanation:
Total surface area of a rectangular prism is the sum of every surface of the prism.
Surface of rectangular prism = 2 (l* w + w* h + l* h).
So surface area = 2 (4* 1 + 1* 5 + 4* 5) ==> 2 (4 + 5 + 20) = 2 (29) = 58m^{2}.
3. The surface area of a square prism of side length 1m and height 3m is:
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Correct answer is option - 1
Explanation:
A square prism has 2 square bases and its total surface area is sum of every surface.
Surface of square prism = 2s^{2} + 4* s* h where s = side length and h = height.
So surface area = (2* 1) + (4* 1* 3) = 2 + 12 = 14m^{2}.
4. What is the area of a triangular prism, whose base of the triangle is 2m and the remaining two sides are 3m, 3.5m. The height of the triangle is 5m and the length of the prism is 6m.
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Correct answer is option - 4
Explanation:
Surface area of the triangular prism, A = lx+ ly+lb+bh
Given: base, b= 2m, x = 3m, y = 3.5m, h = 5m and l = 6m.
So, Surface area = (6* 3) + (6* 3.5) + (6* 2) + (2* 5) = 18 + 21 + 12 + 10 = 61m^{2}
5. What is the total surface area of a rectangular prism whose length is 6m, width is 5m and height is 7m?
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Correct answer is option - 1
Explanation:
Total surface area of a rectangular prism is the sum of every surface of the prism.
Surface of rectangular prism = 2 (l* w + w* h + l* h).
So surface area = 2 (6* 5 + 5* 7 + 6* 7) ==> 2 (30 + 35 + 42) = 2 (107) = 214m^{2}.