Question

7)There are 3 answers answer this and I will mark u brainliest

Answer 1

Answer:

£2195 is needed to re-decorate the community hall.

Step-by-step explanation:

l = 40m

b = 15m

h = 3m

TSA = 2(lb+bh+lh)

=2(40×15+15×3+40×3)

=2(600+75+120)

=2(795)

=1590sq.m

area of base=lb

=40×15

=600 sq.m

area to be painted=TSA - area of base

=1590-600

=990sq.m

no tins of paint =990/25

=39.5

cost of paint = 39.5×£10

=£395

area to be tiled = area of base

=600 sq.m

no of tiles = 600/1

=600

cost of tiles = 600×£3

=£1800

total cost = cost of paint +cost of tiles

=£395+£1800

=£2195