Choose all that compute the correct area of the circle. the area of a circle with a diameter of 5 cm. a ≈ 19.63 cm2 the area of a circle with a radius of 3 cm. a ≈ 28.27 cm2 the area of a circle with a diameter of 4 cm. a ≈ 50.27 cm2 the area of a circle with a radius of 7 cm. a ≈ 153.94 cm2

Area of a circle with radius "r" can be found using the formula :

Also we have radius = diameter / 2

So let us find area of all the given diameter or radius.

(1)

we are given diameter =5cm

So first finding radius, radius = diameter/2 =5/2 =2.5

Now plugging this value of radius in the formula for area we have,

Area =19.625 cm² or Area =19.63 cm²

So first answer is correct

(2)

radius =3cm

Plugging this value in the formula for area ,

Area =28.26cm²

(3)

Diameter =4cm

Radius = 4/2 =2 cm

Area =12.56 cm²

(4)

Radius =7cm

Area =153.86 cm²

x/3-10=8

x/3=18

x=48

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17