Miscellaneous Exercises (2) A closed box is painted on the outside at the rate of ₹1.25 / dm². What is the total cost of painting a box of length 25 dm, breadth 20 cm and height 15 cm?
Answers
Answered by
1
Answer:
आपकी ज़रूरत के हिसाब से ठीक परिणाम दिखाने के लिए, हमने कुछ ऐसे परिणाम हटा दिए हैं जो बहुत कुछ पहले ही दिखाए गए 8 परिणामों जैसे ही हैं.
अगर आप चाहें, तो दोबारा खोज करके हटाए गए परिणामों को शामिल कर सकते हैं.
Answered by
4
Step-by-step explanation:
Length of the box (l)=60 cm
Breadth of the box (b)=40 cm
Height of the box (h)=30 cm
Total surface area of the box =2(lb×bh×hl)
=2(60×40+40×30+60×30)cm
2
=2(2400+1200+1800)cm
2
=2×5400cm
2
=10800cm
2
Cost of painting 20 cm
2
=50 paise=Rs
100
50
∴ Cost of painting 1 cm
2
=Rs
100
50
×
20
1
∴ Cost of painting 10800 cm
2
=Rs
100
50
×
20
1
×10,800=Rs270
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