Can anyone help please ? What will the area of this triangle be with the base of 3.5 and a height of 7?

21 units
12.25 and hits squared
24.5 units

The circumference of a circle is 5 pi cm. what is the area of the circle?

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

Which translation maps the vertex of the graph of the function f(x) = x2 onto the vertex of the function g(x) = x2 – 10x +2?