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Rasek [7]
3 years ago
11

Help!!!!!!!!!!!!!!!!!! (#8)

Mathematics
1 answer:
anastassius [24]3 years ago
4 0
Area of a semicircle  = \frac{ \pi r^2}{2}
r = 7 cm
pi = 3.14

Area = 3.14 * 7^2 / 2
Area = 3.14 * 49 / 2
Area = 153.86 / 2
Area = 76.93 cm^2  <<<<<  Answer
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Luis wants to buy a skateboard that usually sells for $79.74. All merchandise is discounted by 12%. What is the total cost of th
eduard

Answer:

75.26

Step-by-step explanation:

Most sales taxes work by not being calculated until cash in some form changes hands. So you take the discount first and then you add the sales tax on the new amount.

Take the discount first

Original cost = 79.74

Discount amount = 79.74 * 12% = 79.74 * 12/100 = 9.57

New price = 79.74 - 9.57 = 70.17

Now you are ready to add on the sales tax

70.17 * 7.25/100 = 5.09

The total is 70.17 + 5.09 = 75.26

7 0
2 years ago
Find the area of a trapezium whose parallel sides are 28.7 cm and 22.3 cm and distance between parallel sides is 16 cm.
puteri [66]

Given:

The parallel sides of a trapezium are 28.7 cm and 22.3 cm.

The distance between parallel sides is 16 cm.

To find:

The area of a trapezium.

Solution:

The area of the trapezium is:

A=\dfrac{a+b}{2}h

Where, a,b are parallel sides and h is the vertical distance between the parallel sides.

Putting a=28.7, b=22.3,h=16 in the above formula, we get

A=\dfrac{28.7+22.3}{2}\times(16)

A=\dfrac{51}{2}\times 16

A=51\times 8

A=408

Therefore, the area of the trapezium is 408 square cm.

4 0
3 years ago
The figure shows a rectangle ABCD where the diagonals AC and BD intersect E. Given that BEC=52.
denis23 [38]
Ii is the correct answer and try using photomath it helps ;)
3 0
2 years ago
The length of XY the minor arc is 48 cm what is the circumference of Z
Amanda [17]
If found the image that accompanies this problem, the central angle was 60°. Since the circumference of a circle is always 360°, the minor arc represents 60°/360° of the circle.

48 cm / (60°/360°) = 48 cm / (1/6) = 48 cm * 6/1 = 48 cm * 6 =  288 cm

The circumference of circle Z is 288 cm.

4 0
3 years ago
Read 2 more answers
HHEEEEEEEELLLLPPPPPPPP 11 POINTS
svp [43]
The answer is C........
7 0
3 years ago
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