Sue bought a triangular shaped piece of wood with a height 120cm and a base of 30 cm. She plans to cover the front side with a piece of fabric, how much fabric will she need
Answers
Answer:
✬ 756 Marble pieces ✬
Step-by-step explanation:
Given:
Dimensions of rectangular floor is 8.4 x 5.4 cm.
Base of triangle is 40 cm and height is 30 cm.
To Find:
How many marble pieces will be required to cover the floor ?
Solution: First finding the area of rectangular floor.
➙ Length of floor = 8.4 m or 840 cm
➙ Breadth of floor = 5.4 cm or 540
★ Ar. of Rectangle = Length • Breadth ★
⟹ Ar. of floor = (840 \times× 540) m²
⟹ 453600 m².
So, the area of rectangular floor is 453600 cm².
Now , Find the area of each marble piece that is in form of triangle.
As we know that
★ Area of ∆ = 1/2(Base)(Height) ★
⟹ Ar. of marble = 1/2(40)(30)
⟹ 600 cm².
∴ Total marble pieces required = Area of floor/Area of marble piece
➬ 453600 cm²/600 cm²
➬ 756 marble pieces.
Hence, 756 triangular marble pieces will be required to cover the floor.