Let SA =surface area, la=lateral area, b=base, h=height, l=slant height;
b=l
57=3(1/2b²)
57/3*2=b²
b= √38
SA= 1/2 (√38)²+57 cm²= 94 cm²
Answer:
<em>15 miles</em> is the correct answer.
Step-by-step explanation:
It is given that Post office is at the intersection point of First Street and Main Street and forms a right angle.
Please refer to the attached image, let us suppose post office is at point P.
Intersection of Oak street and First street is towards North and
Intersection of Oak street and Main street is towards East
PQ represents the Main Street and PR represents the First Street.
It is given that Car A drives 21 miles on main street to reach oak street
<u>To find:</u>
How far will car B have to travel on first street to get to oak street?
i.e. PR = ?
<u>Solution:</u>
By trigonometric rules we know that
Here , perpendicular is PQ i.e. 21 miles and Base is PR
Hence, <em>15 miles</em> is the correct answer.
first get all variables on the same side, then use elimination to solve.
x = -3
y = -11
Answer:
V = 9 in^3
Step-by-step explanation
Comment
The formula for a Pyramid of any B is V = B * h / 3. You have to be able to calculate the Base or just be given in it.
In this case the Base is a triangle. So the first thing needed is the area of the base.
<em>Base</em>
Area_triangle = base length * height / 2
Neither the Base length nor the height need to be the same as the B and h used for the volume of the Pyramid
<em>Givens</em>
b = 4 inches
h = 1.5 inches
Area_triangle = 4 * 1.5 / 2
Area_triangle = 2 * 1.5
Area_triangle = 3 inches^2
Solution
Base (triangle) Area = 3
h = 9
V = B * h / 3
V = 3 * 9 / 3
V = 9 cubic inches
Answer V = 9 in^3