It’s the 3rd one :) hope this helps
Answer:
S.A. = 138.16
Step-by-step explanation:
S.A. = πrl+πr²
3.14 x 4 = 12.56
12.56 x 7 =87.92
3.14 x 4 = 12.56
12.56 x 4 = 50.24
87.92 + 50.24 = 138.16
Let me know if this helps!
Answer:
The measure of the larger is .
Step-by-step explanation:
Given:
The measure of an angle is degrees less than three times the measure of another angle.
The two angles are supplementary.
To find: The measure of the larger angle.
Solution:
Let the measure of the smaller angle be .
Then the measure of the larger angle be .
The two angles are supplementary, so their sum is .
So,
So, the measure of the smaller angle is .
And, the measure of the larger angle is .
Hence, the measure of the larger is .
Answer:
7.) 2400
8.) 4200
9.) 1600
10.) 63000
11.) 10000
Step-by-step explanation:
You only round numbers in the left most place like (4687 to 5000 and 29 to 30)
7.) 315 * 8
round 315 to 300
300 * 8 = 2,400
8.) 562 * 7
round 562 to 600
600 * 7 = 4,200
9.) 82 * 15
round 82 to 80 and 15 to 20
80 * 20 = 1,600
10.) 711 * 88
round 711 to 700 and 88 to 90
700 * 90 = 63,000
11.) 126 * 95
round 126 to 100 and 95 to 100
100 x 100 = 10,000