Plzzz answer que. no. 24 & 25..
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prashant008:
Plzz answer
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24) Total cardboard required for 1 vase = LSA of cylinder + Area of base
= 2πrh + πr²
= πr ( 2h + r)
= 22/7 x 7 ( 2 x 336 + 7)
= 22 (679)
= 14938 cm²
75 vases = 1120350 cm³
Rs 10 per 50 cm²
Per cm³ = Rs 1/5
Total cost = 1120350 / 5 = Rs 224070
25) Radius = 10 cm
Length = 18 km/hr = 1800000 cm/hr
Volume of water per hour = πr²h = 22/7 x 10² x 1800000
= 22/7 x 1800000 = 5657142.86 cm³
1 cm³ = 0.001 liter
5657142.86 cm³ = 5657.142 liters per hour
In 4 hours = 5657.142 x 4 = 22628.568 liters
= 2πrh + πr²
= πr ( 2h + r)
= 22/7 x 7 ( 2 x 336 + 7)
= 22 (679)
= 14938 cm²
75 vases = 1120350 cm³
Rs 10 per 50 cm²
Per cm³ = Rs 1/5
Total cost = 1120350 / 5 = Rs 224070
25) Radius = 10 cm
Length = 18 km/hr = 1800000 cm/hr
Volume of water per hour = πr²h = 22/7 x 10² x 1800000
= 22/7 x 1800000 = 5657142.86 cm³
1 cm³ = 0.001 liter
5657142.86 cm³ = 5657.142 liters per hour
In 4 hours = 5657.142 x 4 = 22628.568 liters
Thank you soo sooo soooo much
Answered by
1
Q. 24)
Radius = 7 cm
Height = 336 cm
Total cardboard required for 1 vase = L.S.A of cylinder + Area of base
= 2πrh + πr²
L.S.A = 2×22/7 ×7×336 = 14784 cm²
Base area = 22/7 × 7 × 7 = 154 cm²
Total cardboard required for 1 vase = 14784 + 154 = 14938 cm²
Total cardboard required for 75 vases = 75×14938
= 1120350 cm³
Cost of cardboard for 50 cm² = Rs 10
Cost of cardboard for 1cm³ = Rs 1/5
Total cost = 1120350 / 5
= Rs 224070
==============================================================
25) Radius = r = 10 cm
Length = 18 km/hr = 1800000 cm/hr
Volume of water per hour = πr²h
= 22/7 x 10 x 10 x 1800000
= 5657142.86 cm³
1 cm³ = 0.001 litres
5657142.86 cm³ = 5657.142 liters [in 1 hr ]
In 4 hours = 5657.142 x 4
= 22628.568 liters
======================
Radius = 7 cm
Height = 336 cm
Total cardboard required for 1 vase = L.S.A of cylinder + Area of base
= 2πrh + πr²
L.S.A = 2×22/7 ×7×336 = 14784 cm²
Base area = 22/7 × 7 × 7 = 154 cm²
Total cardboard required for 1 vase = 14784 + 154 = 14938 cm²
Total cardboard required for 75 vases = 75×14938
= 1120350 cm³
Cost of cardboard for 50 cm² = Rs 10
Cost of cardboard for 1cm³ = Rs 1/5
Total cost = 1120350 / 5
= Rs 224070
==============================================================
25) Radius = r = 10 cm
Length = 18 km/hr = 1800000 cm/hr
Volume of water per hour = πr²h
= 22/7 x 10 x 10 x 1800000
= 5657142.86 cm³
1 cm³ = 0.001 litres
5657142.86 cm³ = 5657.142 liters [in 1 hr ]
In 4 hours = 5657.142 x 4
= 22628.568 liters
======================
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