Subject

    Quantitative Aptitude

    Topic

    Areas & Volumes

    A tank is 25m long 12m wide and 6m deep. The cost of plastering its walls and bottom at 75 paise per sq m is

    ক)
    Rs. 258
    খ)
    Rs. 358
    গ)
    Rs. 458
    ঘ)
    Rs. 558

    Explanation

    Area to be plastered = [2(l+b)×h]+(l×b)\left[2\left(l+b\right)\times h\right]+\left(l\times b\right) [2(25+12)×6]+(25×12)=744sq.m\left[2\left(25+12\right)\times6\right]+\left(25\times12\right)=744sq.m Cost of plastering = 744×75100=Rs.558744\times\frac{75}{100}=Rs.558

    Find Tutors

    View all Tutors