What is the area of this composite figure?

216

Step-by-step explanation:

the area is ((B + b) x h) / 2

which is ((22 + 14) x 12) / 2

We can split this composite shape into two different shapes: A Rectangle and a right angled triangle.
Area of rectangle: Length * Width
= 12cm * 14cm
= 168cm^2

Area of the triangle: (Base * Height) / 2
= (12cm * 8cm) / 2
= 96cm/2
= 48cm^2

Lastly, we just need to add up both of our area’s to come up and solve for our area of the composite shape:

168cm^2 + 48cm^2
= 216cm squared

The scientist was observing for 42.5 hours.