Question

An open tank with inner dimensions 80cm*75cm*120cm is to be cemented find the weight of cement required if 300g of cement is used to cement 15cmsq of area .

Answer 1

Step-by-step explanation:

area of the space of the open tank total surface area of open tank is 2( lb+bh+hl)

2(80×75+75×120+120×80) 2(6000+9000+9600)

2(24600)=49200cm

300g used15cm

then

49200×300/15

49200×20=98400 g of cement

98.4 kg cement