A cardboard box open from the top is 1.5 m long 1.25m wide and 65 cm deep , find the area of a cardboard required at Rs. 25 per square meter
Answers
Answered by
60
Heyy Buddy ❤
Here's your Answer...
=> Total Surface Area of Cuboid = 2(lb + bh + hl)
=> 2(1.5 × 1.25 + 1.25 ×0.65 + 0.65 × 1.5)
=> 2( 1.8 + 0.81 + 0.97)
=> 2 × 3.58
=> 7.17 m^2.
Since, it is open from the top
therefore,, L× b
=> 1.5 × 1.25
=> 1.8 m^2.
So, the area of cardboard = 7.17 - 1.8
=> 5.73m^2.
Now,
Cost For 1 m^2 = 25
So, Cost for 5.73m^2 = 5.73 × 25
=> 134.25 Rupee.
Here's your Answer...
=> Total Surface Area of Cuboid = 2(lb + bh + hl)
=> 2(1.5 × 1.25 + 1.25 ×0.65 + 0.65 × 1.5)
=> 2( 1.8 + 0.81 + 0.97)
=> 2 × 3.58
=> 7.17 m^2.
Since, it is open from the top
therefore,, L× b
=> 1.5 × 1.25
=> 1.8 m^2.
So, the area of cardboard = 7.17 - 1.8
=> 5.73m^2.
Now,
Cost For 1 m^2 = 25
So, Cost for 5.73m^2 = 5.73 × 25
=> 134.25 Rupee.
amamtami:
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Answered by
0
Answer:
LSA of the box = 2h(l+b)
h = 65cm
l = 150cm
b = 125cm
2 * 65 (150 + 125)
130(275)
35750 cm²
Now, Bottom part = l*b
= 150 * 125
= 18750 cm²
Area of Cardboard = 35750 cm² + 18750 cm²
= 54500cm²
54500 cm²/10,000
5.45m²
Cost of Cardboard = 25 * 5.45
= Rs 136.25
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