Variables and Algebraic Expressions: Using additional geometric shapes

A farmer buys several areas of land as shown in the diagram. How much land did he buy in total?

Enter the elements if necessary.

_{^{$6ax+a^2+4a+\frac{1}{4}x^2\pi$}}

Calculate the circumference of the wheel in the diagram.

^{$21.2a+7.2+8b$}

Express the perimeter as follows.

Enter the elements.

$8+10x$

What is the height of the tower in the drawing?

The tower is formed by rectangles.

$6x+17$

What is the area of the flower represented in the diagram?

$7.69x^2\pi+13\pi$