Question

Please help and explain how you found the answer

On a scale drawing every 5cm is equal to 12ft. Ac circular base has a diameter of 20cm. What is its actual circumference and area in feet?

C=

A=

Answer 1

C= about 150.72 ft

A= about 1808.64 ft squared

How I did it:

Considering that every 5cm is equal to 12 feet, and the diameter in cm is 20, I divided 20 by 5 to find the amount of 12-foot sections in the drawing. 20/5=4, so I multiplied 12 by 4 to find the diameter in feet, which was 48. This means that 48 ft=d. I then used the formulas for circumference (
`\pi`*d) and area (
`\pi r^(2)`) using the diameter of 48 to get C and A.

Hope I helped :)