Answer:
I not sure this 76.5
Step-by-step explanation:
9cmx17cm=156/2=76.5
Then 76.5/2= 39
I hope this helpful for you.... Sorry....
Answer: the parenthesis: (44-4)
Step-by-step explanation: In order of operations parenthesis are always first. Then exponents, then multiplication and division, and then addition and subtraction. (PEMDAS)
Easey
makes a right triangle with the building
hypotonuse is 13
and the height and base are the legs
we know that
for a right triangle with legs lgnth a and b and hypotonuse legnth c
c²=a²+b²
c=13
a=2
b=h
13²=2²+h²
169=4+h²
minus 4
165=h²
sqrt both sides
√165=h
aprox 12.8452=h
about 12.85ft