In a 30cm by 25cm rectangle, a quadrant of a circle of radius 7cm has been cut away from each corner. What is the perimeter of t
he part left? and also what is the area of the part left
1 answer:
Answer:
97.96 cm
596.14 cm²
Step-by-step explanation:
sides become:
- 30 cm ⇒ 16 cm
- 25 cm ⇒ 11 cm
and added corners:
- 4*2πr/4= 2πr = 2*3.14*7 cm= 43.96 cm
then perimeter is:
- P= 2*16+2*11+43.96= 97.96 cm
the area left is:
- A= 30*25- 4*1/4*3.14*7²= 596.14 cm²
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