Both questions make use of the formula for the area of a triangle:
.. A = (1/2)*b*h
23. A = (1/2)*b*h
.. A = (1/2)*x*7 . . . . substitute the given values
.. A = 3.5x . . . . . . . simplified
24. A = (1/2)*b*h
.. 84.5 = (1/2)*13*h . . . . . substitute the given values
.. 2*84.5/13 = h = 13 . . . .solve for h
The height of the triangle is 13 cm.
Answer: The area is 180 square millimeters.
The length is 15 mm and the width is 12 mm. The length if the perimeter-- if you were going to ask that is
(2)(15) + 2(12)
54mm.
Step-by-step explanation:
SA of a cylinder: 2

r² + 2

rh
r = radius of base
h = height of cylinder
Plug in 3 for r and 5 for h in the formula.
2

3² + 2

(3)(5)
Use a calculator to solve.
2

3² + 2

(3)(5) =
150.8 ft²