Answer:
9 and 10
Step-by-step explanation:
To work this out, you can either evaluate or find the 2 closest perfect squares to 89.
With the second method, the 2 closest perfect squares are 81 and 100, otherwise known as 9² and 10². This means is between 9 and 10.
With the first method, the result is 9.4339811320... which is between 9 and 10.
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Answer:
Perimeter: 33.7 mm
Area: 54 mm
Step-by-step explanation:
If you do 12 + 9.7 + 12 you will get the perimeter, and to get the area you would use the formula A = x base x height. Since the base is 12 and the height is 9, you would do 12 x 9 x 0.5 to get 54 mm for the area of the triangle.