math 10-3

Question

Answer 1

Step 1:

Redraw the composite figure dividing it into geometric figures:

Observe the figure:

The composite figure consists of three rectangles.

Area of the composite figure is sum of areas of two rectangles excluding rectangular dog house area.

Step 2:

Find the area of the rectangle with breadth 9 m and length 12 m.

Area of the rectangle is .

Find the area of the rectangle with breadth 5 m and length 11 m.

Area of the rectangle is .

Find the area of the dog house with breadth 1 m and length 1.5m.

Area of the composite figure is .

Area of the composite figure is 161.5 m².

Solution:

Composite figure is

Area of the composite figure is 161.5 m².