3 years ago

WILL MARK BRAINLIEST PLEASE SHOW WORK!

Mathematics

1 answer:

alisha [4.7K]3 years ago

4 0

Step-by-step explanation:

4. the area of semi circle R =

3²/5² × 75π = 9/25 × 75π = 27π cm²

5. the ratio of their areas = 1²:7² = 1:49

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