Answer:
21.9
Step-by-step explanation:
The altitude of an isosceles triangle bisects the base. So, x represents the hypotenuse of a right triangle with legs of 9 and 20. It can be found using the Pythagorean theorem:
x^2 = 9^2 +20^2 = 81 +400
x = √481 ≈ 21.932
The length x is about 21.9 units.
Given:
1 cm in the plan is equal to 2 meters in real life
Length of corridor in plan = 9 cm
To find:
Actual length of corridor
Steps:
Since we know that 1 cm in plan = 2 meters
So,
9 cm = 2 * 9
length of corridor = 2 * 9
Length of corridor = 18 meters
Therefore, the length of the corridor is 18 meters
Happy to help :)
Please dont post question from primary/middle school in college
Answer:
V = 1538.6 cm^3
Step-by-step explanation:
The volume of a cylinder is given by
V = pi r^2h where r is the radius and h is the height
V = pi (7)^2 10
V = 3.14 (49)10
V = 1538.6 cm^3
Yes it’s 5 1/4
because 4 goes into 21 5 times (5x4=20) so then you have 1 left over.
I didn’t see your full question but I’ve seen the same question before. If I’m correct, it should be 5/12 x 192 = 80. So she would put $80 in her savings account.