Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

primary 6 | Maths | Measurement
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
rahilah
Rahilah

primary 6 chevron_right Maths chevron_right Measurement chevron_right Singapore

Plz help me...TQ

Date Posted: 1 month ago
Views: 46
Kamala
Kamala
1 month ago
Rectangle:
Length = l = 8 cm
Breadth = b = 4cm

Semi-circle 1:
Radius = r1 = 4cm

Semi-circle 2:
radius = r2 = 2cm

Area of rectangle is l * b = 8*4 = 32

Area of semi-circle 1 = (Pi * r1*r1)/2 = (Pi*4*4)/2
= 8Pi

Area of semi-circle 2 = (Pi*r2*r2)/2 = (Pi*2*2)/2
=2Pi

Area of the given figure = Area of Semi-circle 1 +
Area of Semi-circle 2 +
Area of Rectangle
= 8 Pi + 2 Pi + 32
=(10 Pi + 32) cm2

Option (4) is the answer
rahilah
Rahilah
1 month ago
Thank you so much kamala
rahilah
Rahilah
1 month ago
Kamala, may i ask is formula for pi will always be (pi*r*r)/2 ?
Kamala
Kamala
1 month ago
Area of a circle is PI * r * r
Since, the given figure is a semi-circle, We are using the area formula as,
(PI * r * r ) * 1/2 which equals half the area of a circle.
Kamala
Kamala
1 month ago
Pi = π
rahilah
Rahilah
1 month ago
Ok...i will remember this formula...thnx kamala

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Kamala
Kamala's answer
54 answers (Tutor Details)