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Find the Area, in Square Metres, of the Trapezium Whose Basesand Altitude is as Under: Bases = 12 Dm and 20 Dm, Altitude = 10 Dm - Mathematics

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ConceptArea of Trapezium

Question

Find the area, in square metres, of the trapezium whose bases and altitude is as under:
bases = 12 dm and 20 dm, altitude = 10 dm

Solution

Given:
Bases:
\[12 dm =\frac{12}{10}m = 1.2 m\]
And, 20 dm \[=\frac{20}{10}m=2 m\]
Altitude = 10 dm \[=\frac{10}{10}m = 1 m\]
Area of trapezium \[=\frac{1}{2}\] x (Sum of the bases) x (Altitude)
\[ = \frac{1}{2} \times (1 . 2 + 2) m \times (1) m\]
\[ = 1 . 6 \times m\times m\]
\[ {=1.6 m}^2 \]

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APPEARS IN

 RD Sharma Solution for Mathematics for Class 8 by R D Sharma (2019-2020 Session) (2017 to Current)
Chapter 20: Mensuration - I (Area of a Trapezium and a Polygon)
Ex. 20.2 | Q: 1.1 | Page no. 22

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Solution Find the Area, in Square Metres, of the Trapezium Whose Basesand Altitude is as Under: Bases = 12 Dm and 20 Dm, Altitude = 10 Dm Concept: Area of Trapezium.
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