The perimeters of the three marked rectangles of this
cuboid are as follows:
Rectangle A - 14 cm
Rectangle B - 18 cm
Rectangle C - 20 cm
Find the I, band h of the cuboid. Then find its volume.
Length=6cm
Breath=4cm
Height=3cm
Volume=72 cu.cm
Answers
Answered by
1
Answer:
U ALREADY NOW THE ANSWER BRO SO JUST BE A PRO
Explanation:
Answered by
0
Explanation:
Given The perimeters of the three marked rectangles of this cuboid are as follows:
Rectangle A - 14 cm
Rectangle B - 18 cm
Rectangle C - 20 cm
Find the I, band h of the cuboid. Then find its volume.
Length=6cm
Breath=4cm
Height=3cm
- So a cuboid has 3 sides It has 12 edges. So it has 6 faces. In that 6 faces there are 6 rectangles.
- So let the unique edges be A,B and C.
- Also perimeter of a rectangle is 2(l + b)
- Now 2A + 2B = 14
- 2A + 2C = 18
- 2B + 2C = 20
- So we get
- A + B = 7
- A + C = 9
- B + C = 10
- A + C = 9
- C = 9 – A
- Substituting in B + C = 10 we get
- B + C = 10
- B + 9 - A = 10
- B - A = 1
- B + A = 7
- B - A = 1
- ------------------
- 2B = 8
- B = 4
- Now A + B = 7
- A + 4 = 7
- A = 3
- Now A + C = 9
- 3 + C = 9
- C = 6
- So we have length = 6 cm, breadth = 4 cm height = 3 cm
- Now Volume = length x breadth x height
- = 6 x 4 x 3
- Volume = 72 cu cm
Reference link will be
https://brainly.in/question/36115424
Similar questions