Get the answers you need at Westonci.ca, where our expert community is always ready to help with accurate information. Discover in-depth answers to your questions from a wide network of experts on our user-friendly Q&A platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

Tess makes a circular flower bed of diameter 4 metres. She puts a single line of paving blocks around the outside of the flower bed. Each block is 20cm in length. How many blocks does she need to go around the whole flower bed?

Sagot :

Answer:

63 = number of blocks needed

Step-by-step explanation:

Circumference = 2 • ∏ • radius

radius = diameter/2

radius = 4m/2

radius = 2m

Circumference = 2 • π • 2m

Circumference = 2 • π • 2m

Circumference =  4 • π m

Circumference = 12.6m

Circumference = 1260cm

1260cm / 20cm = number of blocks needed

63 = number of blocks needed