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

Tracy wants to buy some pies for her sisters and she has a budge apple pies, $4.5 banana pies, and $5.5 chocolate pies. She wants sisters and must buy as many c

PLZ HELP PLZ HELP plz will mark brainlest

whats 8+0 lol njxzzzzzzzzzzzzzaK

The Student Council at High School A held a Student Body President election. There are 940 students in enrolled and 625 students voted for a Student Body Presid

pls help! will give brainliest to the best explanation

12 + 3/4 ? Decimal & fraction form

6CO2 + 6H20 + Sunlight → C6H1206 + 602 In the above formula, how many atoms of Hydrogen are on the product side of the equation?

Which feature of life in the early 19th century caused many Americans to feel fearful and anxious about the future?

Find the dimensions of the box with volume 1728 cm3 that has minimal surface area. (Let x, y, and z be the dimensions of the box.) (x, y, z)

The net amount of carbon in the atmosphere between 1750 and 2012 ___________.