Answer:
£2380.13
Step-by-step explanation:
An increase of 8.5% is 100% + 8.5% = 108.5% = 1.085 , then
£2193.67 × 1.085 = £2380.13 ( to 2 dec. places )
Option C:
Perimeter of the of a circle = 10.71 cm
Solution:
Given figure is of a circle.
It is a quarter of a circle.
Radius = 3 cm, Value of <em>π</em> = 3.14
To find the perimeter of the quarter of a circle.
Perimeter of the quarter of a circle formula:
Perimeter of the quarter of a circle = 10.71 cm
Option C: 10.7 is the correct answer.
Hence perimeter of the of a circle is 10.71 cm.
The roof will be in the shape of an isosceles triangle with a base length of 30 m and two sides that are 17 m. The two 17 m beams will have the same angle of elevation since they have to might in the middle.
So to find the angle of elevation, we can split the roof in half vertically to create a right triangle. The base will now be 15 m, and the hypotenuse will be 17. Now we can use a trigonometry function to solve for the angle. We know the hypotenuse and the side adjacent to the angle, so we can use cosine.
The answer is 28.1 degrees
Answer: C
Step-by-step explanation: Round to the nearest 100
3(√x+1-5)=27
divide both sides by 3
√x+1-5= 27
add 5 to both sides
√x+1=27+5
√x+1=32
take square of both sides
x+1=32
subtract 1 from each sides
x=32-1
x=31