Step-by-step explanation:
let's find the circumference of the semi circle. as it's a parallelogram opposite sides are equal. therefore 2 semicircles will have the same circumference
circumference of circle = 2pi r
circumference of half circle = half of circle= pi r
circumference of half circle = 22/7 × 4 ( diameter is 8 therefore radius is half of that)
circumference of half circle = 88/7
this image has 2 half circles with same radius
now find the perimeter of total figure
perimeter= 9+ 9+ 88/7 +88/7
= 18 + 176/7
= 18+ 25.14
= 43.14
to nearest tenth place = 43.1
Answer:
8+8+9+9
If 8 is the diameter then that's the answer
9514 1404 393
Answer:
Step-by-step explanation:
A) Your scientific or graphing calculator can tell you the product:
(3.9×10^33 erg/s)(1.55×10^7 s) = 6.045×10^40 ergs
__
B) 10^2 mm is 100 mm, about 4 inches, so 1.8×10^2 mm is about 7 inches. This is somewhat larger than the diameter of a human hair (and about the same size as the diameter of a human head).
1.8×10^-2 mm = 18 μm is a more reasonable estimate of hair diameter
(The range of hair diameters is reportedly about 17 to 181 μm, so the given dimension is on the low end.)
Answer: $7.50
Step-by-step explanation:
Statements Reasons
1. (2y) ∙ 4 + y 1. Given
2. 4 ∙ (2y) + y 2. Commutative Property
3. (4 ∙ 2) ∙ y + y 3.
4. 8y + y 4. Commutative Property
5. 9y 5. Addition
Multiplication
Distributive Property
Addition
Associative Property
.
1 points
Question 3
Answer with Explanation:
It is given that infinite geometric series with a beginning value of 2 , converges to 10.
Let a be the common ratio of geometric series.Where ,a<1.
Sum to infinity of a geometric series
First four terms of geometric series