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Maths CBSE Live product
Class 9 (2026-27)
Measuring Space: Perimeter and Area
Problems on Heron’s Formula
7.
TBQ - Evaluate the area
Question:
3
m.
The sides of a
triangle
are in the ratio
7
\(:\)
5
\(:\)
6
and its perimeter is
144
\(cm\).
Obtain
the area of the
triangle
.
(Use \(\sqrt{6} = 2.45\))
Area of the
triangle
\(=\)
950.8
935.8
940.8
945.8
\(cm^2\).
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