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 main purpose for the draft revision

On average, how many people enter Starbucks every hour if a person spends 6 minutes at Starbucks on average and there are 16 people in Starbucks on average?

The penthouse apartment in most high-rise apartment buildings usually costs more to rent than other apartments. This best illustrates the economic concept of __

1245 1255 1547 1737 1989 2011 1245 1255 1547 1654 find range variance and standard deviation.

What is the volume of a cube with sides measuring 1.5 cm?

If the molar concentration of lead bromide, PbBr2, in an aqueous solution is 1.6x10⁻⁶ M, what is [Pb²] and [Br⁻]?

Fill in the blank with the word for the person, place, or thing described. Follow the model. Modelo: El padre de mi padre Example answer: abuelo Chicos ______

Which of the numbers 1, 2, and 3 is a solution of 2x+1>=7?

What has been done to the software listed in the 'Install a program from the network' option in 'Programs and Features'?

after analyzing tue changes to china's economy in the 1980's and the 1990's, what can we conclude about the reason the chinese population support deng xiaoping