Drawing a picture definitely helps! since BD is 6", it is split evenly into 3 and 3. AC is the same except it splits into 4 and 4. because AC and BD are perpendicular to each other, the crossing lines form a 90 degree angle. in this case, the missing side is 5 because the sections form a pythagorean triple (3, 4, 5). you could do the pythagorean theorem (a^2 + b^2= c^2) but having some pythagorean triples memorized will help a lot. i hope this helped!
Answer:
the firs tone is right
Step-by-step explanation:
5 x 2x = 10x + 5 x 8 = 40 which is 10x + 40
Answer:
132km
54km
Step-by-step explanation:
the formula to find the volume of a rectanguar prism;
V = L x W x H
Length times with times height
formula for a triangular prism;
V= 1/2 x B x H x L
recheck them both just in case I did them in a rush
Answer:
Step-by-ste63p explanation:
2/3 = 42
1/3 = 42 ÷ 2
=21
3/3 is 1 min
3/3 = 21 x 3
= 63