Answer:
AC = 13.9 cm.
Step-by-step explanation:
See the attached diagram.
Draw a perpendicular on AD from B which is BE.
Now, CD = BE
Now, Δ ABE is a right triangle and
AB² = BE² + AE² {Applying Pythagoras Theorem}
⇒ 11² = BE² + (AD - DE)²
⇒ 11² = BE² + (11 - 4)² {Since CB = DE = 4 cm}
⇒ 11² = BE² + 7²
⇒ BE² = 11² - 7² = 72
⇒ CD² = 72
Now, Δ ACD is a right triangle and
AC² = CD² + DA² {Applying Pythagoras Theorem}
⇒ AC² = 72 + 11² = 193
⇒ AC = 13.89 ≈ 13.9 cm
I cannot see the equation
M∠3 + m∠4 = 180° ( RIGHT)
m∠2 + m∠4 + m∠6 = 180° ( RIGHT)
m∠2 + m∠4 = m∠5 ( RIGHT)
m∠1 + m∠2 = 90° (WRONG)
m∠4 + m∠6 = m∠2 (WRONG)
m∠2 + m∠6 = m∠5 (WRONG)
Answer:1350
Step-by-step explanation:
7500/250=30
30x45=1350
Answer:
29
Step-by-step explanation:
Triangular inequalities| Each side has to be shorter than the sum of the other two, and longer than their difference. It means you're bound between 10 and 34 - excluded. Only valid values becomes 29.
Please note, 34 is exactly the sum of the two length. It means the triangle is squeezed so the third corner is in the same line as the first two