a tin of paint covers a wall area of 8 m2 A novice wasted 12 5% oh the paint - Maths - Circles

Question

a tin of paint covers a wall area of 8 m2 A novice wasted 12 5% oh
the paint For painting a circular partition wall of radius 7 m,how
many tons would he need?

Mayank · Accepted Answer

Area painted by a tin=8m2amount wasted=12
5%=18amount utilised=8-88=8-1=7m2Area of wall of radius 7m=π72=49πsince one tin covers 7m2tin required=49π7=7π=7×3
14=21 98approximately 22 tins are required

a tin of paint covers a wall area of 8 m2 .A novice wasted 12.5% oh the paint.For painting a circular partition wall of radius 7 m,how many tons would he need?