4. Find the area of a rhombus if each of its sides measures 41 cm and one of the diagonals is 80 cm.
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Step-by-step explanation:
let quadrilateral ABCD is a rhombus with a diagonal
AC= BD ( diagonal bisect each other of a rhombus )
AREA of Rhombus = AC×CD÷2
= (41 ×41)÷2
= 1681÷2
= 840.5
area of rhombus is 840 square units
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