Tis your daughter's birthday and you are preparing a family meal. the joint of meat needs to be cooked for 30 minutes per 500 g plus an extra 20 minutes. how long will it take to cook a joint of meat weighing 2.5 kilograms? enter your answers in minutes.

With M as center we draw an arc which intersects given line at two points X & Y

Step-by-step explanation:

Given: let say a line AB and an external point M.

We have to write the first step to be used to construct a line perpendicular to line AB and passing through point M.

We can use only Compass and scale.

Perpendicular lines are the lines which intersects and form a right angle at point of intersection.

We suppose a line AB is already drawn and An external Point M.

After this the Next and important that we do is as following:

With M as center we draw an arc which intersects line AB at two points X & Y