25
Ah, what a lovely question! To find the perimeter of a semicircle, you'll need to add the curved part (half the circumference of a full circle) to the diameter of the semicircle. Since the diameter is 8cm, the radius is half of that, which is 4cm. The perimeter would then be half the circumference of a full circle (pi times the diameter) plus the diameter, giving you a total of 4π + 8 cm.
To find the area of the figure, we first need to find the area of the semicircle and the trapezoid separately, then add them together. The area of a semicircle is half the area of a full circle, which is πr^2, where r is the radius. In this case, the radius is half the diameter, so 16/2 = 8 feet. Therefore, the area of the semicircle is 1/2 * π * 8^2 = 32π square feet. The area of a trapezoid is calculated using the formula A = (1/2) * (b1 + b2) * h, where b1 and b2 are the lengths of the bases and h is the height. Plugging in the values, the area of the trapezoid is (1/2) * (12 + 14) * 8 = 104 square feet. Adding the areas of the semicircle and trapezoid together gives a total area of 32π + 104 square feet.
Diameter: 2*4 = 8 cm
8.0
25
Twice as big.
8*pi + 16 = 41.13 cm (approx)It depends on whether 8 cm is the radius or diameter of the semicircle.
Ah, what a lovely question! To find the perimeter of a semicircle, you'll need to add the curved part (half the circumference of a full circle) to the diameter of the semicircle. Since the diameter is 8cm, the radius is half of that, which is 4cm. The perimeter would then be half the circumference of a full circle (pi times the diameter) plus the diameter, giving you a total of 4π + 8 cm.
Diameter of semicircle = 1 Area of semicircle = Pi/8 Area of triangle = 0.25 Area outside triangle = (Pi/8) - 0.25 = 0.1427 (rounded to 4th decimal).
Area = 50.265 cm2Circumference = 25.132 cm
64 pi
Perimeter of a semicircle is the length of the half-circle plus the diameter. The whole circle would have a length of diameter times pi, but since it's only half... Perimeter of semicircle = (1/2*pi*D) + D
Yes, you can.
To find the area of the figure, we first need to find the area of the semicircle and the trapezoid separately, then add them together. The area of a semicircle is half the area of a full circle, which is πr^2, where r is the radius. In this case, the radius is half the diameter, so 16/2 = 8 feet. Therefore, the area of the semicircle is 1/2 * π * 8^2 = 32π square feet. The area of a trapezoid is calculated using the formula A = (1/2) * (b1 + b2) * h, where b1 and b2 are the lengths of the bases and h is the height. Plugging in the values, the area of the trapezoid is (1/2) * (12 + 14) * 8 = 104 square feet. Adding the areas of the semicircle and trapezoid together gives a total area of 32π + 104 square feet.
Diameter = Radius * 2 In this case, radius = 8 cm so diameter = 16 cm
The radius is always exactly half of the diameter, so if the radius is 8 cm, then the diameter is 16 cm.