Answer:
a) 6.67 in.
Step-by-step explanation:
The aspect ratio of chalkboard =4:3 [length:width=4:3]
The width = 5 in.
the length = L
so,
4:3=L:5
⇒4/3 = L/5
⇒(4 x 5)/3= L
⇒20/3 = L
⇒ 6.67 = L
∴ The length of the chalkboard 6.67 in.
Substitute 3 into the expression for m, and 7 into it for n. So 3mn = 3(3)(7) = 3 x 21 = 63.
Answer:
Step-by-step explanation:
we know that
Using proportion
Answer:
A) 56.549
B) 9.425
Step-by-step explanation:
2(pi)r=56.54867
60/360x56.54867=9.425
Answer:
B
Step-by-step explanation:
