Construct a rhombus $ABCD$, in which length of the side $CD=6 \mathrm{cm}$ and diagonal $BD=8.5 \mathrm{cm}$.

Construct a rhombus $\mathrm{ABCD}$ in which $\mathrm{AB}=4 \mathrm{cm}$ and diagonal $\mathrm{AC}=6.5 \mathrm{cm}$.

Which of the following steps is INCORRECT while constructing a rhombus $ABCD$, given that $AC=8 \mathrm{cm}$ and $BD=6 \mathrm{cm}$?

Step $1$: Draw $AC=8 \mathrm{cm}$.

Step $2$: Draw $PQ$, the perpendicular of $AC$. $PQ$ intersects $AC$ at point $O$.

Step $3$: With $O$ as centre and radius equal to $3 \mathrm{cm}$, drawn an arc cutting $OP$ at $D$.

Step $4$: With $O$ as centre and radius equal to $3 \mathrm{cm}$, draw another arc cutting $OQ$ at $B$.

Step $5$: Join $AB,BC,CD$ and $DA$.

With a ruler and compass only, construct the following angle:

$150°$.

Construct a rectangle $\mathrm{PQRS}$ in which $\mathrm{QR}=3.6 \mathrm{cm}$ and diagonal $\mathrm{PR}=6 \mathrm{cm}$. Measure the other side of the rectangle.

Copy $\angle AOB$ shown in the given figure. Using a ruler and compass, construct an angle equal to $2\frac{1}{2}$times $\angle AOB$.

Construct a square, each of whose diagonals measure $5.8 \mathrm{cm}$.

Construct a rectangle $\mathrm{ABCD}$ whose adjacent sides are $11 \mathrm{cm}$ and $8.5 \mathrm{cm}$.

Construct a rhombus the length of whose diagonals are $6 \mathrm{cm}$ and $8 \mathrm{cm}$.