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Question
Find the missing values.
| Height 'h' | Parallel side 'a` | Parallel side 'b` | Area |
| 16 cm | 15 cm | 360 sq.cm |
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Solution
Given: The height h = 16 cm
Parallel sides a = 15 cm
Area of the trapezium = 360 sq.cm
`1/2` × h × (a + b) = 360
`1/2` × 16 × (15 + b) = 360
15 + b = `360/8`
15 + b = 45
b = 45 – 15 = 30
b = 30 cm
Tabulating the results we get
| Height 'h' | Parallel side 'a` | Parallel side 'b` | Area |
| 16 cm | 15 cm | 30 cm | 360 sq.cm |
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