Answer:
234 mm²
Step-by-step explanation:
area of each side = L x W
(15 x 3 x 2) + (15 x 4 x 2) +(3 x 4 x 2) = 234 mm²
Answer:
5
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2+b^2 = c^2 where a and b are the legs and c is the hypotenuse
a^2 + 10^2 = (5 sqrt(5))^2
a^2 +100 = 25(5)
a^2 +100 = 125
a^2 = 125-100
a^2 = 25
Taking the square root of each side
sqrt(a^2) = sqrt(25)
a = 5
All of the above. it is a three dimensional pyramid, and a "polyhedron" means it is triangular.
144pi
becous the radius is 24pi/(pi*2) and thet is 12
now 12²*pi is 144pi
Alan is 14 years old
He is twice as old as James
then Alan is the elder brother
Alan is twice as old means his age is double the age of James
Alans age = 2 x james age
that means James must be half of Alans age
Alans age = 14 years
James age = 14 / 2 = 7 years
therefore James is 7 years old
