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Here is a link to help you! :) TSA
1)
v = (bxh'÷2) x h²
v = (5x3÷2) x 8.5m
v = (7.5m²) x 8.5m
v = 63.75m³
2)
v= l x w x h
v= 20cm x 8cm x 16cm
v= 2560m³
3)
v= (bxh'÷2) x h²
v= (4x8 ÷2) x 6.5cm
v= 16cm² x 6.5 cm
v= 104cm³
3/8 = .375
.375x104cm³ = 39cm³
4)
A.O.C (Area of circle)
aoc = Ï€r²
aoc = 3.14 x 6 x 6
aoc = 113.04 cm²
v= aob x h
v= 113.04 x 15
v= 1695.6cm³
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