Question

Find the cost of painting a cubical box of side 8 m Rs. 15 per meter square (pls give step by step explaination)​

Answer 1

Answer:Rs 0.054 (if question is printed correctly and rate of painting is Rs 10 per sq.m)

Rs 540 (if question is printed incorrectly and rate of painting is Rs 10 per sq.cm)

total surface area(tsa) of cube = 6a^2 (where a is length of the side)

tsa = 6*3*3 = 54 sq cm

rate of painting per square metre (as specified in question) = Rs 10 per sq.m

=> rate per sq.cm = 1000paise/(100 * 100)

= 0.1 paise per sq.cm

total cost = 54 * 0.1 = 5.4paise = Rs 0.054

If question is misprinted and rate is Rs. 10 per sq.cm

then total cost = Rs. 540

Step-by-step explanation: