Trace several round objects onto the grid on Math Masters, page 436
Answer:
There are 44 countries in Europe today, according to the United Nations. The full list is shown in the table below, with current population and subregion (based on the United Nations official statistics).
9514 1404 393
Answer:
Left: area: 702 square feet; perimeter: 114 feet
Right: area: 20 square inches; perimeter: 24 inches
Step-by-step explanation:
<u>Left Figure</u>
The unmarked horizontal edge of the figure is 30 ft -24 ft = 6 ft long. The area of the figure can be figured as the difference between the 27 ft by 30 ft enclosing rectangle, and the 18 ft by 6 ft "notch" taken from the upper right corner of that.
area = (27 ft)(30 ft) -(18 ft)(6 ft) = 810 ft² -108 ft² = 702 ft²
The perimeter is the sum of the side lengths. The sum of vertical side lengths is 2×27 ft; the sum of horizontal side lengths is 2×30 ft, so the perimeter is ...
54 ft +60 ft = 114 ft . . . perimeter
__
<u>Right Figure</u>
The unmarked horizontal segment at the top of the figure is 7 in -3 in -2 in = 2 inches long. This means the area can be divided into two rectangles: the bottom one 2 in by 7 in, and the one sticking up from that 3 in by 2 in. The total area of the figure will be ...
(2 in)(7 in) +(3 in)(2 in) = 14 in² +6 in² = 20 in² . . . area
The perimeter is the sum of the side lengths. The sum of vertical side lengths is 2×(2 in+3 in), and the sum of horizontal side lengths is 2×7 in. Then the perimeter is ...
2×(5 in) +2×(7 in) = 10 in +14 in = 24 in . . . perimeter
Answer:
x is the sidelength of the square;
f(x) = x^(2)
8100 = x^(2)
90 = x
