Answer: 31.4 cm
Step-by-step explanation:
C = 2r
2r = d
d = 10
= 3.14
10 x 3.14 = 31.4 cm
Answer:
Step-by-step explanation:
22.78.................................
Possible lengths of the shadow are 6√3 in and 2√3 in
Step-by-step explanation:
- Step 1: The stick is placed in the ground and so makes a right angle with the ground. To find the shadow, use the trigonometric ratios using the angles 30° and 60° along with opposite side of length 6 in.
- Step 2: Find the length of the shadow, which is the length of the adjacent side.
tan A = opposite side/adjacent side
For A = 30° ⇒ tan 30 = 6/adj side
⇒ Adjacent side = 6/tan 30 = 6 ÷ 1/√3 = 6√3 in
For A = 60° ⇒ tan 60 = 6/adj side
⇒ Adjacent side = 6/tan 60 = 6/√3 = 2√3 in
Let the x be the number of business class. y be the number of economy
x + y = 27 ...............(a)
700x + 375y = 15000 .............(b)
Multiply first equation by 700
700*x + 700*y = 700*27
700x + 700y = 18900 ...............(c)
Recall:
<span>700x + 375y = 15000 .............(b)
</span>-
<span>700x + 700y = 18900 ...............(c)
</span>____________________________
0 -325y = -3900
y = -3900/-325 = 12
Recall x + y = 27, x + 12 = 27, x = 27 - 12 = 15
<span>C) 15 business class and 12 economy class</span>