Susan has a round cake. The cake has a diameter of 20 cm. Susan wants to put a ribbon round the cake. What is
the least length of ribbon she can use? Give your answer to 1 decimal
place.
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Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

What is the total surface area of this square pyramid?

What 8/12+8/11 in another way than and improper fraction