What is the value for x in the diagram? Rounded to the tenth
2 answers:
Answer:
x ≈ 10,54 units
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 17² = 20²
x² + 289 = 400 ( subtract 289 from both sides )
x² = 111 ( take the square root of both sides )
x = ≈ 10.54 ( to 2 dec. places )
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Answer:
18.7 cm²
Step-by-step explanation:
To work out the area of a triangle you have to use the formula
Where "B" is the base and "H" is the height
Since these are decimals, I like to convert them into fractions which makes them easier to calculate with
The base is 4.25 cm which will turn into
The height is 8.8 cm which will turn into
Now we use the formula
→ Convert to improper fractions
→ Simplify
→ Convert into decimal
18.7