📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    âš¡ Month End Offer - Flat 52% Off On All Courses! Enroll Now âš¡
    00:00:00 AM Left

    Question

    A cuboidal water tank has dimensions (20 × 14 × 12) cm

    and is open from the top. If painting the outer surface costs Rs. 5 per cm², find the total painting cost.
    A Rs.4,480 Correct Answer Incorrect Answer
    B Rs.5,480 Correct Answer Incorrect Answer
    C Rs.5,080 Correct Answer Incorrect Answer
    D Rs.3,480 Correct Answer Incorrect Answer

    Solution

    ATQ, Area to be painted = lateral surface area + area of base = 2 × (length + breadth) × height + length × breadth = 2 × (20 + 14) × 12 + 20 × 14 = 2 × 34 × 12 + 280 = 816 + 280 = 1,096 cm² Required cost = 1,096 × 5 = Rs. 5,480

    Practice Next
    ask-question