Answer:
44.1 mm^2
Step-by-step explanation:
The formula for a trapezoid is 1/2(b1 + b2)h
A= 1/2(12.5 + 8.5) 4.2
= 1/2x21x4.2
=44.1
Answer: A 24 cm piece of string is cut into two pieces , one piece is used to form a circle and the other piece is used to form a square.
How should this string be cut so that the sum of the areas is a minimum .
:
Let x = the circumference of the circle
then
(24-x) = the perimeter of the square
:
Find the area of the circle
find r
2*pi*r = x
r =
Find the area of the circle
A =
A =
A = sq/cm, the area of the circle
:
Find the area of the square
A = sq/cm the area of the square
The total area
At = +
Graph this equation, find the min
Min occurs when x=10.6 cm
cut string 10.6 cm from one end
Step-by-step explanation: Hope I help out alot (-: :-)
Answer:
11m/min
Step-by-step explanation:
slope of the line = velocity of the turtle
slope = y/x
= 55/5
=11
Answer:
5h-2
Step-by-step explanation:
It is the correct answer
Answer:
Cube has larger volume than cylinder.
Step-by-step explanation:
Given:
Side of a cube = 7 cm
Radius of a cylinder (r) = 5 cm
Height of a (h) = 4 cm
Find:
Larger volume = ?
Computation:
Volume of cube = Side³
Volume of cube = 7³
Volume of cube = 343 cm³
Cube has larger volume than cylinder.
