How many groups of sixty are in 244

So if you imagine splitting the arrow into a triangle on top and a rectangle on the bottom, we can figure out the areas:
triangle:
The area of a triangle is (base × height)/2 so in this case 13 is the base and 3 (15 - 12) is the height, so 13 × 3 = 39, 39 ÷ 2 = 19.5 square centimeters.
rectangle:
For this, you just do base × height which would be 12 × 11 = 132.
Now you add the two values to get 151.5 as the answer. I hope this helps!