Your answer is D 6.9*1010 because... Q: 2.3*104=239.2 A 2.3*107=246.1 B 2.3*108=248.4 C 6.9*109=752.1 D 6.9*1010=6,969 >>>> Your answer Your answer is D.
Answer:
3775 in²
Step-by-step explanation:
The surface area of the ramp :
Area of rectangle = 20 * 23 = 460 in²
Area of rectangle = 20 * 23 = 460 in²
Area of rectangle = 25 * 23 = 575 in²
Bottom rectangle = 60 * 23 = 1380 in²
For the trapezium: (front and rear)
1/2 (base 1 + base 2) * height
Base total = 20+ 20+ 20= 60
1/2(60)*15 = 450 in²
Total surface Area :
(460 + 460 + 575 + 1380 + 450 + 450) in² = 3775 in²
You can’t really tell the problem, you need more explanation.
Answer:
up to down: yes, no, no, yes
Step-by-step explanation