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Using the sine rule we can work out the value of one of the angles, and then we can use that to get the area. If we label the sides a, b and c then the angles opposite the sides will be A, B and C respectively. We'll label the longest side a (25m), then the next longest side b (23m) and side c will be 10m The sine rule tells us that a2 = b2 + c2 - 2absinA. Substituting th evalues we know we get * 252 = 232 + 102 - 2(23)(10)sinA * 625 = 529 + 100 - 460sinA * 625 - 629 = -460sinA * -4 = -460sinA * 4/460 = sinA * 1/115 = sinA * A = sin-1 1/115 * A = 89.5 This then allows us to work out the other angles and the area... and these are * Angle A = 89.51 * Angle B = 23.58 * Angle C = 66.91 Area = 115 Square Metres
What else can I help you with?
What is area of semicircle?
The area of a semicircle is half of the area of a circle. The area of a circle is pi x radius x radius. So the area of a semicircle is 1/2 x pi x radius x radius or (pi x radius x radius) / 2.
How do you find the area of this shapes?
These are some basic formula's;The area of a Triangle:base x height divided by 2.The area of a Square:base x height.The area of a Rectangle:base x height.The area of a Parallelogram:base x height.The area of a Trapezoid:(a + b) divided by 2 x h.The area of a Circle:3.142 x radios.
What is the exact circumference of a circle with an area of 121 cm2?
area = π x radius2 → radius =√(area/π) circumference = 2 x π x radius = 2 x π x √(area/π) = 2 x √(area x π) = 2 x √(121 cm2 x π) = 22 √π cm
What is the circumference of a circle that has a square area of 32?
I assume you mean the circle's area is 32 square units: area = π x radius2 ⇒ radius = √(area ÷ π) circumference = 2 x π x radius = 2 x π x √(area ÷ π) = 2 x √(area x π) ⇒ circumference =2 x √(32 x π) ~= 20 units.
How does the dimensions of a cylinder help you to find its surface area?
Total Surface Area of Cylinder = 2 x pi x radius x (radius + height)Surface area of base circle = pi x radius x radiusSurface area of curved part = 2 x pi x radius x heightHence, total surface area = (2 x area of base circle) + (area of curved part)= (2 x pi x radius x radius) + (2 x pi x radius x height)= 2 x pi x radius x (radius + height)
What is the steps of finding the surface area of a cylinder?
Base Area = pi x radius x radius Curved Surface Area = 2 x pi x radius x height Total Surface Area = 2 x pi x radius x (radius + height)
What is the area of a rectangle with a perimeter of 28cm?
You can't tell. The perimeter doesn't tell you the area. There are an infinite number of rectangles that all have the same perimeter but different areas. Here are a few that all have perimeters of 28 cm: 1 x 13 . . . . . Area = 13 2 x 12 . . . . . Area = 24 3 x 11 . . . . . Area = 33 4 x 10 . . . . . Area = 40 5 x 9 . . . . . Area = 45 6 x 8 . . . . . Area = 48 7 x 7 . . . . . Area = 49
How do you get the circumference of a circle knowing the area?
area = π x radius2 ⇒ radius = √(area ÷ π) circumference = 2π x radius ⇒ circumference = 2π x √(area ÷ π) ⇒ circumference = √(4π2 x area ÷ π) ⇒ circumference = √(4π x area) So knowing the area, the circumference can be calculated by taking the square root of the area multiplied by 4 times π Example: What is the circumference of a circle with area 78.54cm2 Circumference = √(4π x area) = √(4π x 78.54cm2) ~= 31.42cm
Area of a triangle 2.7 x 5.2 x 6.5?
what is the area of a triangle 2.7 x 5.2 x 6.5
What is the largest area that you can have if the perimeter is 24 feet?
You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.
What is the perimeter of a circle that has an area of 28.3 square feet?
circumference ~= 18.9 ft area = π x radius2 ⇒ radius = √(area/π) circumference = 2 x π x radius ⇒ circumference = 2 x π x √(area/π) ⇒ circumference = √(4 x π x area) ⇒ circumference = √(4 x π x 28.3 ft2) ~= 18.858 ft
How do you find the circumference of a circle if you have the area and nothing else?
Area = (pi) x (Radius)2Radius = sqrt(area/pi)Circumference = (2 pi) x (Radius) = (2 pi) x sqrt(area/pi)Circumference = 2 x sqrt(pi x area)
