A student was to find the area of a circle. By mistake he used the value 3.41 instead of 3.14, the value of pi; his answer was c

Question

GaryK [48]

3 years ago

6

A student was to find the area of a circle. By mistake he used the value 3.41 instead of 3.14, the value of pi; his answer was c

onsequently 10.2 too large. Find the radius of the circle.

Mathematics

2 answers:

julia-pushkina [17] · Answer 1 · 2021-12-03T05:52:58+03:00

julia-pushkina [17]3 years ago

6 0

<span>0.5 is the answer plz mark me as brainliest answer</span>

sammy [17] · Answer 2 · 2021-12-03T07:45:37+03:00

Area=pir²

areamistake=31.4r²
areactual=3.14r²

if
31.4r² is 10.2 bigger than 3.14r²
then
31.4r²=10.2+3.14r²
minus 3.14r² from both sides
28.26r²=10.2
divide both sides by 28.26
r²=0.36093418259023354564755838641189
squaer root both sides
r=0.60077798111301777772277024274837
about 0.6 units

the radius is 0.6 units