katie is solving brain teasers she solve 6 brain teasers in 72 minutes how long did she spend on each brain teaser
2 answers:
You might be interested in
Answer:
A = 140 in²
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = bh ( b is the base and h the perpendicular height )
here b = 20 and h = 14 , then
A = × 20 × 14 = 10 × 14 = 140 in²
Answer: 7.6cm
Step-by-step explanation:
The volume of a sphere is given as:
since the volume has be given to be 1837.35 and is 3.14 , we will substitute into the formula, that is :
multiplying through by 3 , we have :
divide through by 12.56
find the cube root of both sides :
therefore :
Therefore:
≈ 7.6cm