Answer:
132 m²
Step-by-step explanation:
The rectangle is 20 m by 6 m.
Base of triangle: 20 m - 8 m - 6 m = 6 m
Height of triangle: 10 m - 6 m = 4 m
The triangle has a base of 6 m and a height of 4 m.
A = LW + bh/2
A = 20 m × 6 m + (6 m × 4 m)/2
A = 120 m² + 12 m²
A = 132 m²
Answer:
112.5
Step-by-step explanation:
you would then cross multiply. 90 x 100 and 80 x ?
you will then have 9000 = 80?
divide 9000 by 80 and you will get ? = 112.5
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We want to find the perimeter of the given figure. We will find that the perimeter of the figure is 35.7 units.
Remember that for a circle of diameter D, the perimeter or circumference is:
p = pi*D
where pi = 3.14
So we have a half-circle and an equilateral triangle, and we know that the equilateral triangle sides measure 10 units each.
Notice that the diameter of the half-circle is equal to the side length of the triangle, then the diameter is D = 10
Then the length of the arc of the half-circle is just given as half the circumference of a circle with a diameter of 10 units, this is:
C = (1/2)*3.14*10 = 15.7
And to this we must add the two sides of the triangle that belong to the perimeter, remember that each one measures 10 units, then the total perimeter is:
Perimeter = 15.7 + 10 + 10 = 35.7
If you want to learn more, you can read:
brainly.com/question/9350935
70+5x=320
5x=250
x=50
The mechanic charged $50 per hour.
