30 students could of been taking both courses and 60 with no course
Answer: A
Step-by-step explanation:
Using pythagoras;

Please give me a brainliest answer
Answer:
When sides are doubled, the area of new triangle will always be 4 times the original, the change in area will be 3 times. Hence the % change will always be 300% irrespective of the type of triangle.
Step-by-step explanation: