The diagram shows a prism with a trapezium as its crosssection.
a) Find the volume
b) The prism is made of gold.
Gold has a density of 19.3g/cm3,
find the mass of the gold.
a)
Find the volume
Cross-sectional area =
CSA =
1
(6
2
1
(𝑎
2
+ 𝑏) × ℎ
+ 4) × 5
CSA = 25𝑐𝑚2
Volume = CSA × Length
V= 𝟐𝟓 × 𝟏𝟎 = 𝟐𝟓𝟎𝒄𝒎𝟑
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b) The prism is made of gold.
Gold has a density of 19.3g/cm3,
find the mass of the gold.
𝐷𝑒𝑛𝑠𝑖𝑡𝑦
𝑀𝑎𝑠𝑠 =
𝑉𝑜𝑙𝑢𝑚𝑒
19.3
𝑀𝑎𝑠𝑠 =
= 0.0772𝑔
250