edithonwunali78 edithonwunali78

24-08-2020
Mathematics

contestada

calculate the perimeter of a semi circle whose radius is 21cm

Respuesta :

salukhalid salukhalid

24-08-2020

Radius of semicircle r = 21 cm

Perimeter of semicircle

= pi*r + 2r

= (22/7)*21 + 2*21

= 22*3 + 42

= 66 + 42

= 108 cm

Answer Link

Otras preguntas

What is the perimeter of a rectangle with a length of 2x + 4 and a width of 4x? Draw a picture as well.

The most common approach to developing pro forma financial statements is called the cash budget method. financial planning method. seasonality approach. percent

PLEASEEEEEEEE HELPPPPPP

Which of the following elements is the smallest? O A. Silicon (Si) O B. Phosphorus () O C. Chlorine (CI) O D. Sulfur (s) SUBMIT

Please answer, Thank you so much in advance

A cruise ship with a mass of 1.03 ✕ 107 kg strikes a pier at a speed of 0.652 m/s. It comes to rest after traveling 4.44 m, damaging the ship, the pier, and the

Two researchers observe aggressive behaviors displayed by preschool children. The first researcher records a large number of aggressive acts displayed within a

Tin(IV) sulfide, SnS 2 , a yellow pigment, can be produced using the following reaction. SnBr 4 ( aq ) + 2 Na 2 S ( aq ) ⟶ 4 NaBr ( aq ) + SnS 2 ( s ) Suppose a

Which of the following best describes the author's use of deductive reasoning?

What is the simplified answer for this problem? 8x + 4 + 5(x + 3) +1