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It depends whether the UNSHOWN figure has the shaded sector as the sector which includes the 90° angle, or the one which excludes it.
Assuming that it is the sector including the 90° angle, ie the question should have been written:
What is the area of a sector of a circle with a radius of 3 units when the angle of the sector is 90°?
It is a fraction of the whole area of the circle.
The fraction is 90°/360° (as there are 360° in a full turn and only 90° are required) = 1/4
Area circle = π × radius² = π × (3 units)² = 9π square units
→ area 90° sector = ¼ × area circle
= ¼ × 9π square units
= 9π/4 square units
≈ 7.1 square units
What else can I help you with?
In a circle a 90 degrees sector has area 16pi ft2. what is the radius of the circle?
The radius is 8 feet.
What is the area of the shaded sector if the circle has a radius of 4 and the central angle is 90 degrees?
An entire circle is 360 degrees. 90 deg is 1/4 of that. Area of a circle is A = pi r^2 area of this sector is (1/4) pi r^2 = (1/4) x 3.14 x 4x4 =12.56
What is the arc measure of a sector with area 38.485 ft2 and radius 7?
Area of sector: 38.485 sq ft Area of circle: 153.93804 sq ft Arc in degrees: (38.485/153.93804)*360 = 90.00114592 or about 90 degrees Arc in feet: 10.99557429 or about 11 feet
Quarter of a circle?
25%. 45 degrees. Radius.
What type of angle is formed by a tangent and a radius?
The angle between the radius and the tangent is a right angle of 90 degrees.
What is the area of the shaded sector if the circle has a radius of 3 and the central angle is 90 degrees?
Find the area of the shaded sector. radius of 3 ...A+ = 7.07
In a circle a 90 degrees sector has area 16pi ft2. what is the radius of the circle?
The radius is 8 feet.
What is the area of the shaded sector if the circle has a radius of 4 and the central angle is 90 degrees?
An entire circle is 360 degrees. 90 deg is 1/4 of that. Area of a circle is A = pi r^2 area of this sector is (1/4) pi r^2 = (1/4) x 3.14 x 4x4 =12.56
What is the area of a sector whose central angle is ninety degrees and has a radius of ten inches?
Well a circle has 360 degrees so a sector of 90 degrees has an area equal to 90/360 (or 1/4) of a circle with the equivalent radius. The area of a circle is defined as PI*Radius^2 so the area of a 90 degree sector will be 1/4*PI*Radius^2. The area will be 1/4*3.14*10^2 or 78.5 in^2.
In a circle a 90 degree sector has has area 36 pi ft squared what is the radius of the circle?
The radius is 12
What is the arc measure of a sector with area 38.485 ft2 and radius 7?
Area of sector: 38.485 sq ft Area of circle: 153.93804 sq ft Arc in degrees: (38.485/153.93804)*360 = 90.00114592 or about 90 degrees Arc in feet: 10.99557429 or about 11 feet
Quarter of a circle?
25%. 45 degrees. Radius.
What is the area of a sector whose central angle is ninety degrees and has a radius of six inches?
Remember that a circle has 360 degrees, and now you are looking for 90 degrees. 90 degrees is 1/4, or a quarter, of 360 degrees. The formula for the area of a sector is [pi(r)^2](x/360), where x is the degrees you are looking for. So the equation is [pi(6)^2](90/360). First, you simplify it to [pi(6)^2](1/4). The next step would be [pi(36)](1/4). The final answer would be 9pi.
In a circle a 90 degrees sector has an area of 225 pie in squared What is the radius of the circle?
area = 225 pi = pi R squared/4 R = square root 900 = 30 in
What type of angle is formed by a tangent and a radius?
The angle between the radius and the tangent is a right angle of 90 degrees.
What is the radius of a circle if it had a 90 degree sector and an area if 64pi?
From your question, we can't tell whether [ 64 pi ] is the area of the circleor the sector.The area of a circle is [ pi R2 ].If [ 64 pi ] is the area of the circle, then the radius is [ 8 ], and we don't careabout the sector.If [ 64 pi ] is the area of the sector, then the area of the full circle is [ 256 pi ](because the 90-degree sector is 1/4 of the circle), and the radius is [ 16 ].
What is the formula of 90 degrees elbow?
If radius is short it is 1 times pipe diameter. If it is a long radius it is 1.5 times nominal pipe diameter.
