Answer:
d = 6.997 or 7
Step-by-step explanation:
Use Pythagorean Theorem to find the diagonal of the end of the prism
2^2 + 3^2 = C^2 Simplify
4 + 9 = C^2 Add
13 = C^2 Take the square root of both sides
3.6 = C
Now plug this into the Pythagorean Theorem equation for the diagonal of the whole prism.
3.6^2 + 6^2 = d^2 Simplify
12.96 + 36 = d^2 Add
48.96 = d^2 Take the square root of both sides
6.997 = d This can be rounded up to 7, if needed
Answer:
924 cm²
Step-by-step explanation:
The surface area is equal to the area of the two triangles + area of the three rectangles.
Area of two triangles:
12 × (9+5) × 1/2
= 84
84(2) = 168
Area of the three rectangles:
15 × 20 + 13 × 20 + 14 × 20
= 840
840 + 84
The surface area of the triangular prism is 924 cm².
The Answer is 3 + 4 = 8 - 1
Answer:
No. She should have multiplied 12 and One-half to solve
6 yards
Step-by-step explanation:
Number of girls = 12
Each girl needs = 1/2 yard of strings
Suzie workings:
12/1 ÷ 1/2
= 12/1 × 2/1
= 24/1
= 24 yards
No. She should have multiplied 12 and One-half to solve
Correct workings:
Total strings needed for 12 girls = 12 × 1/2 yards
= (12*1)/2
= 12/2
= 6 yards
