Explain how the use of ionising radiation in hospitals can be both useful and harmful.

Ionising radiation is used in medicine in 3 ways: diagnostic radiology, which uses x-ray machines to obtain images of the inside of the patient's body. nuclear medicine, which uses radioactive substances introduced into the patient for diagnosis or treatment.

Ionising radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes. has sufficient energy to affect the atoms in living cells and thereby damage their genetic material (DNA). Fortunately, the cells in our bodies are extremely efficient at repairing this damage.

Explanation:

the answer is 3.1 his answer is wrong mines is right

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2