False
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Answer:
16
Step-by-step explanation:
7x-5+4x-7+x=180
11x-12+x= 180
12x-12=180
+12 = +12
12x = 192
/ 12 / 12
= 16
Answer:
cross-section
Step-by-step explanation:
It means that if you cut through a prism, on either side you would see the same 2d shape.
Answer:
9 m
Step-by-step explanation:
Suppose AB is the ladder. AC is the height of the window above the ground and BC is the distance of the foot of ladder from the wall.
The triangle ABC is right angled at C.
∴ AB² = AC² + BC²
=> 15² = 12² + x²
=> 225 - 144= x²
=> 81 = x²
=> 9 = x
- Hence, distance of the foot of the ladder from the wall is 9 m.