slope = 13
the slope of the tangent is f'( 4)
given f(x) = x² + 5x , then f'(x) = 2x + 5
and f'(4) = ( 2 × 4 ) + 5 = 13
Answer:
25.56 is the surface area of the pool.
Hope this helps! :)
<em>Your answer would be 5, just the number in general.</em>
<em>>[I'ma be honest here and say I had a fraction earlier :P</em>
Here,
Volume of cylinder = 539^3 cm
Circumference = 22 cm
Height = ?
Now,
Circumference = 2πr
or, 22 = 2*22/7*r
or, 22 = 44/7*r
or, 154/44 = r
◆ r = 3.5 cm
Then,
Volume of cylinder = πr^2h
or, 539 = 22/7*(3.5)^2*h
or, 539 = 22/7*12.25*h
or, 539 = 269.5/7*h
or, 3773 = 269.5*h
or, 3773/269.5 = h
◆ h = 14 cm
I hope it's help you...
I hope you understand...
Thanks♥♥
Answer:
228cm^2
Step-by-step explanation:
Formulas we'll use: area of a rectangle is length x width, and area of a triangle = 1/2x base x height
the base is a rectangle, 10 by 3 cm. 10 x 3 = 30cm^2
the sides are also rectangles, 13 by 3 cm. 13 x 3 = 39, but there are 2 of them, 39 x 2 = 78cm^2
The top and bottom are triangles, 1/2(10)(12) = 1/2(120) = 60, but there are 2 of them, 60 x 2 = 120cm^2
Add up the areas to get your total surface area. It's in square cm
30 + 78 + 120 = 228cm^2
