The diagonal of a rectangular board is 1 m and its length is 96 cm find the area of the board
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diagonal=1m=100cm
in one triangle
d²=l² + b²
100²= 96² + b²
10000= 9216 + b²
b²= 10000-9216
b²=784
b=√784
b= 28cm
are of board = l×b
=28×96
= 2688cm
in one triangle
d²=l² + b²
100²= 96² + b²
10000= 9216 + b²
b²= 10000-9216
b²=784
b=√784
b= 28cm
are of board = l×b
=28×96
= 2688cm
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