Question

the diameter of a semicircular field is 14 cm then its perimeter is 46 and B 36 m m c 40 m d 42 metres......(with step by step explanation by working)

Answer 1

Answer:

36m

Step-by-step explanation:

Diameter of a semicircle = 14m

Radius of semicircle = 7m

Perimeter of a semicircle = πr + 2r

Perimeter = (22/7)*7 +14

Perimeter = 22 +14

Perimeter = 36m

Answer 2

Answer:

Option B is correct .i.e., Perimeter of field is 36 cm.

Step-by-step explanation:

Given: Diameter of Semicircular field = 14 cm

To find: Perimeter of Field

Figure is attached.

Radius of semi circular field, r = $\frac{14}{2}$ = 7 cm

Circumference of semicircular field = $\frac{2\pi r}{2}$

                                                            = $\frac{22}{7}\times7$

                                                            = 22 cm

Perimeter of field = 22 cm + 14 cm

                             = 36 cm

Therefore, Option B is correct .i.e., Perimeter of field is 36 cm.