Me Nadine and Danielle, doing surface area questions.
top
lxw
12x4.5
54x2
=108
side
lxw
10.4x4.5
46.8x2
lxw
12x10.4
124.8x2
=249.6
TSA:108+93.6+249=451.6 cm2
bxh/2
8x7/2
56/2
=28
lxw
10.6x2.5
=26.5
lxw
2.5x7
=17.5
lxw
8x2.5
=20
tsa: 28+28+26.5+17.5+20=120cm2
r=d/2
r=9.5/2
r=4.75
2*3.14*r*r
2x3.14x4.75x4.75
=141.70
3.14xdxh
3.14x9.5x11
=328.13
tsa:140.70+328.13= 469.82 m2
lxw
12x4.5
54x2
=108
side
lxw
10.4x4.5
46.8x2
=93.6
front
lxw
12x10.4
124.8x2
=249.6
TSA:108+93.6+249=451.6 cm2
bxh/2
8x7/2
56/2
=28
lxw
10.6x2.5
=26.5
lxw
2.5x7
=17.5
lxw
8x2.5
=20
tsa: 28+28+26.5+17.5+20=120cm2
r=d/2
r=9.5/2
r=4.75
2*3.14*r*r
2x3.14x4.75x4.75
=141.70
3.14xdxh
3.14x9.5x11
=328.13
tsa:140.70+328.13= 469.82 m2
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