# maths

posted by .

• maths -

assuming you mean a circle,

a = 49 pi

## Similar Questions

1. ### How do i do this maths question??

A sector of a circle with radius r cm contains an angle of θ radians between the bounding radii. Given that the perimeter of the sector is 7cm, express θ in terms of r and show that the area is r/2(7-2r)cm square. Hence, …
2. ### Math

The radius of a disk grows at 2cm/s. Calculate the growth rate of the disks area when the radius mesures 7 cm. (Designate the area of the disk with A and the radius with r) A) Find the relation between A and r B) Find the derivative …
3. ### Math

The radius of a disk grows at 2cm/s. Calculate the growth rate of the disks area when the radius mesures 7 cm. (Designate the area of the disk with A and the radius with r) A) Find the relation between A and r B) Find the derivative …
4. ### maths --plse help me..

Find the area of the sector of a circle of radius 7cm if the corresponding arc length is 6.2cm
5. ### Maths

A sector of a circle of radius 7cm subtending an angle of 270 degree at centre of the circle is use to form a cone?
6. ### maths

a fresh cup is in the form of a right circular one of base radius 7cm abd height 24cm .find the area of the sheet required to 10 such cats.
7. ### maths

a cylinder has a height of 7cm and a surface area S=88meter square. what are the radius and volume of this cylinder?
8. ### math

what is the area inscribed in the quadrant of a circle of radius 7cm?
9. ### math

Find the area of a circle of radius: a. 7cm b. 14cm c. 10.5 Use pi= 22/7.
10. ### MATHS

CALCULATE A PERIMETER OF A SECTOR OF A CIRCLE OF RADIUS 7CM WHICH SUBTENDS ANGLE 6ODEGREE AT A CENTRE.

More Similar Questions