Hi guys, pls answer these questions with explanation i will mark brainliast.
Answers
Answer:
2. (a) Given,
Radius = 14mm
Area of circle = πr²
= 22
----- × 14 × 14
7
= 22 × 2 ×14
= 616 mm²
(b) Given,
Diameter = 49m
Radius = 49
----- m
2
Area of circle = πr²
= 22. 49 49
----- × ----- × -----
7 2 2
= 11 × 7 × 49
= 5,733 m²
(c) Given,
Radius = 5cm
Area of circle = πr²
= 22
----- × 5 × 5
7
= 78.571 cm² (approx.)
Answers with step-by-step explanation:
2.(a) Given,
Radius = 14 mm
A = 22/7 × 14 ×14
= 22 × 2 ×14
= 616 mm²
(b) Given,
Area of circle = πr²
Diameter = 49m
Radius = 49/2
=24.5 m²
(c) Given,
Radius = 5 cm
Area of circle = πr²
22/7 × 5 × 5
= 78.571 cm²
5. area of sheet = 3.14 x 4 x 4
= 50.28571 cm²
area of cut out piece = 3.14 x 3 x 3
3.14" was replaced by "(314/100)".
= 28.26000 cm²
area of remaining sheet = 50.28571 - 28.26000
= 22.02571 cm²
hope it helps u